retinoscopy

Summary

Summary: An objective determination of the refractive state of the eye (NEARSIGHTEDNESS; FARSIGHTEDNESS; ASTIGMATISM). By using a RETINOSCOPE, the amount of correction and the power of lens needed can be determined.

Top Publications

  1. ncbi Axial myopia induced by a monocularly-deprived facemask in guinea pigs: A non-invasive and effective model
    Fan Lu
    School of Ophthalmology and Optometry, Wenzhou Medical College, 82 Xueyuan Road, Wenzhou, Zhejiang, 325003, China
    Exp Eye Res 82:628-36. 2006
  2. ncbi A comparison of the reliability of dynamic retinoscopy and subjective measurements of amplitude of accommodation
    Alejandro Álvarez León
    Fundación Universitaria del Área Andina Pereira, Pereira, Colombia
    Ophthalmic Physiol Opt 32:133-41. 2012
  3. pmc ROC analysis of the accuracy of Noncycloplegic retinoscopy, Retinomax Autorefractor, and SureSight Vision Screener for preschool vision screening
    Gui Shuang Ying
    Scheie Eye Institute, Department of Ophthalmology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
    Invest Ophthalmol Vis Sci 52:9658-64. 2011
  4. ncbi Evaluation of healthy equine eyes by use of retinoscopy, keratometry, and ultrasonographic biometry
    Petra Grinninger
    Department of Small Animals and Horses, Faculty of Veterinary Medicine, Vienna University, Vienna 1210, Austria
    Am J Vet Res 71:677-81. 2010
  5. pmc Modified bell retinoscopy: measuring accommodative lag in children
    Kristina Tarczy-Hornoch
    Division of Ophthalmology, Childrens Hospital Los Angeles, Los Angeles, California 90027, USA
    Optom Vis Sci 86:1337-45. 2009
  6. ncbi Retinoscopy and visual evoked potential based evaluation of the exactness of hyperopia correction in children with developmental difficulties
    Dobrila Karlica
    University Department of Ophthalmology, Split University Hospital Center, Split, Croatia
    Acta Clin Croat 49:251-5. 2010
  7. doi A device to aid the teaching of retinoscopy in low-resource countries
    L Donovan
    Br J Ophthalmol 92:294. 2008
  8. pmc Hemiretinal form deprivation: evidence for local control of eye growth and refractive development in infant monkeys
    Earl L Smith
    College of Optometry, University of Houston, Houston, Texas 77204 2020, USA
    Invest Ophthalmol Vis Sci 50:5057-69. 2009
  9. ncbi Recovery from form-deprivation myopia in rhesus monkeys
    Ying Qiao-Grider
    College of Optometry, University of Houston, Houston, Texas 77204 2020, USA
    Invest Ophthalmol Vis Sci 45:3361-72. 2004
  10. ncbi Automated segmentation of 3-D spectral OCT retinal blood vessels by neural canal opening false positive suppression
    Zhihong Hu
    Department of Electrical, The University of Iowa, Iowa City, IA, USA
    Med Image Comput Comput Assist Interv 13:33-40. 2010

Research Grants

  1. Analysis of the Data from Vision in Preschoolers (VIP) Study
    Gui Shuang Ying; Fiscal Year: 2010
  2. OCULAR DEVELOPMENT IN INFANCY/EARLY CHILDHOOD
    Donald Mutti; Fiscal Year: 2005
  3. DOPAMINE/GLUTAMATE AND HYPOXIC INJURY IN NEWBORN BRAIN
    David Wilson; Fiscal Year: 2009
  4. The Predictive Value of Pre-plus Disease in ROP
    David Wallace; Fiscal Year: 2008
  5. Low-cost, portable, computer assisted imaging for diabe*
    Michael Abramoff; Fiscal Year: 2008
  6. Development of Retinal Receptive Fields
    NORBERTO GRZYWACZ; Fiscal Year: 2006
  7. EMMETROPIZATION AND DEVELOPMENT OF MYOPIA IN CHILDREN
    Jane Gwiazda; Fiscal Year: 2005
  8. Correlation Among Retinal Directionally Selective Cells
    NORBERTO GRZYWACZ; Fiscal Year: 2005
  9. Central Scotomas in AMD and Cortical Remapping
    Janet Sunness; Fiscal Year: 2005
  10. VISION SCREENING IN PRESCHOOLERS/CHAIR GRANT
    Paulette Schmidt; Fiscal Year: 2004

Detail Information

Publications222 found, 100 shown here

  1. ncbi Axial myopia induced by a monocularly-deprived facemask in guinea pigs: A non-invasive and effective model
    Fan Lu
    School of Ophthalmology and Optometry, Wenzhou Medical College, 82 Xueyuan Road, Wenzhou, Zhejiang, 325003, China
    Exp Eye Res 82:628-36. 2006
    ..This method is non-invasive and allows evaluation of the same group of animals at different timepoints so that the number of animals required could be minimized without affecting the accuracy of the results...
  2. ncbi A comparison of the reliability of dynamic retinoscopy and subjective measurements of amplitude of accommodation
    Alejandro Álvarez León
    Fundación Universitaria del Área Andina Pereira, Pereira, Colombia
    Ophthalmic Physiol Opt 32:133-41. 2012
    Dynamic retinoscopy (DR) is an objective technique for assessing maximum accommodative responsivity. The present study examined the test-retest reliability of this procedure when measuring the amplitude of accommodation (AA).
  3. pmc ROC analysis of the accuracy of Noncycloplegic retinoscopy, Retinomax Autorefractor, and SureSight Vision Screener for preschool vision screening
    Gui Shuang Ying
    Scheie Eye Institute, Department of Ophthalmology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
    Invest Ophthalmol Vis Sci 52:9658-64. 2011
    ....
  4. ncbi Evaluation of healthy equine eyes by use of retinoscopy, keratometry, and ultrasonographic biometry
    Petra Grinninger
    Department of Small Animals and Horses, Faculty of Veterinary Medicine, Vienna University, Vienna 1210, Austria
    Am J Vet Res 71:677-81. 2010
    ..To assess natural variations in degree of refraction, corneal curvature, corneal astigmatism, corneal radius, and intraocular distance of healthy equine eyes...
  5. pmc Modified bell retinoscopy: measuring accommodative lag in children
    Kristina Tarczy-Hornoch
    Division of Ophthalmology, Childrens Hospital Los Angeles, Los Angeles, California 90027, USA
    Optom Vis Sci 86:1337-45. 2009
    To describe a modified bell retinoscopy (MBR) method for quantifying accommodative lag in children and to assess its repeatability and comparability with other techniques.
  6. ncbi Retinoscopy and visual evoked potential based evaluation of the exactness of hyperopia correction in children with developmental difficulties
    Dobrila Karlica
    University Department of Ophthalmology, Split University Hospital Center, Split, Croatia
    Acta Clin Croat 49:251-5. 2010
    ..0 and +6.0 D, in the range found by retinoscopy, with 1 D step...
  7. doi A device to aid the teaching of retinoscopy in low-resource countries
    L Donovan
    Br J Ophthalmol 92:294. 2008
  8. pmc Hemiretinal form deprivation: evidence for local control of eye growth and refractive development in infant monkeys
    Earl L Smith
    College of Optometry, University of Houston, Houston, Texas 77204 2020, USA
    Invest Ophthalmol Vis Sci 50:5057-69. 2009
    ..To determine whether refractive development in primates is mediated by local retinal mechanisms, the authors examined the effects of hemiretinal form deprivation on ocular growth and the pattern of peripheral refractions in rhesus monkeys...
  9. ncbi Recovery from form-deprivation myopia in rhesus monkeys
    Ying Qiao-Grider
    College of Optometry, University of Houston, Houston, Texas 77204 2020, USA
    Invest Ophthalmol Vis Sci 45:3361-72. 2004
    ..The purpose of this investigation was to re-examine the ability of rhesus monkeys (Macaca mulatta) to recover from FDM...
  10. ncbi Automated segmentation of 3-D spectral OCT retinal blood vessels by neural canal opening false positive suppression
    Zhihong Hu
    Department of Electrical, The University of Iowa, Iowa City, IA, USA
    Med Image Comput Comput Assist Interv 13:33-40. 2010
    ..81 (0.72 for previously reported approach) for the region around the NCO and 0.84 for the region outside the NCO (0.81 for previously reported approach)...
  11. ncbi Sex, eye size, and the rate of myopic eye growth due to form deprivation in outbred white leghorn chickens
    Yen Po Chen
    School of Optometry and Vision Sciences, Cardiff University, Wales, United Kingdom
    Invest Ophthalmol Vis Sci 51:651-7. 2010
    ..Therefore, this study was undertaken to test whether the greater rate of myopic eye growth in males is a consequence of their larger eyes or of some other aspect of their sex...
  12. ncbi Evaluation of infant accommodation using retinoscopy and photoretinoscopy
    Gina Marangoni Gabriel
    Optom Vis Sci 86:208-15. 2009
    ..To compare PlusOptix PowerRefractor (PR) and Monocular Estimation Method (MEM) for measurement of infant accommodation and to assess the usefulness of applying individual calibration factors to PR data...
  13. ncbi Accommodative dysfunction in children with cerebral palsy: a population-based study
    Julie F McClelland
    Vision Science Research Group, Biomedical Sciences, University of Ulster, Northern Ireland, United Kingdom
    Invest Ophthalmol Vis Sci 47:1824-30. 2006
    ..To determine the prevalence, nature, and degree of accommodative dysfunction among children with different types and severities of cerebral palsy (CP) in Northern Ireland...
  14. ncbi A comparison of photorefraction and retinoscopy in children
    Mesut Erdurmus
    Department of Ophthalmology, Fatih University Medical School, Ankara, Turkey
    J AAPOS 11:606-11. 2007
    To compare the results of photorefraction measurement obtained with a Plusoptix CR03 to those of cycloplegic retinoscopy as a standard refraction method in children.
  15. ncbi Integrated analysis of vascular and nonvascular changes from color retinal fundus image sequences
    Harihar Narasimha-Iyer
    Carl Zeiss Meditec, Dublin, CA 94568, USA
    IEEE Trans Biomed Eng 54:1436-45. 2007
    ....
  16. ncbi Automated identification of cone photoreceptors in adaptive optics retinal images
    Kaccie Y Li
    School of Optometry, University of California, Berkeley, CA 94720, USA
    J Opt Soc Am A Opt Image Sci Vis 24:1358-63. 2007
    ..The consistency of our measurements demonstrates the reliability and practicality of having an automated solution to this problem...
  17. pmc Photoreceptor counting and montaging of en-face retinal images from an adaptive optics fundus camera
    Bai Xue
    Department of Ophthalmology and Vision Science, University of California Davis, Sacramento 95817, USA
    J Opt Soc Am A Opt Image Sci Vis 24:1364-72. 2007
    ..Our algorithms do not require spatial regularity in cone packing and are, therefore, useful for counting cones in diseased retinas, as demonstrated for eyes with Stargardt's macular dystrophy and retinitis pigmentosa...
  18. ncbi Analysis of posterior retinal layers in spectral optical coherence tomography images of the normal retina and retinal pathologies
    Maciej Szkulmowski
    Nicolaus Copernicus University, Institute of Physics, ul Grudziadzka 5 7, PL 87 100 Torun, Poland
    J Biomed Opt 12:041207. 2007
    ..Operator intervention is required to assess the quality of segmentation. Thickness and distance maps from the segmented layers and their analysis are presented for healthy and pathological retinas...
  19. ncbi Texton-based segmentation of retinal vessels
    Donald A Adjeroh
    Lane Department of Computer Science and Electrical Engineering, Vido and Image Processing Laboratory, West Virginia University, Morgantown 26506, USA
    J Opt Soc Am A Opt Image Sci Vis 24:1384-93. 2007
    ..9568 specificity at 0.7346 sensitivity. This compares well with the best-published results on the data set 0.9773 specificity at 0.7194 sensitivity [Proc. SPIE5370, 648 (2004)]...
  20. ncbi Accuracy of a new photo-refractometer in young and adult patients
    Thilo Schimitzek
    Sektion Neuroophthalmologie, Kinderophthalmologie, Schielbehandlung Universitäts Augenklinik, Killianstr 5, 79106 Freiburg, Germany
    Graefes Arch Clin Exp Ophthalmol 243:637-45. 2005
    ..This study evaluated the accuracy of a commercially available photo-refractometer (Power Refractor, Plusoptix, Erlangen, Germany) and investigated whether the working distance relaxes the accommodation sufficiently without cycloplegia...
  21. ncbi Axial growth and changes in lenticular and corneal power during emmetropization in infants
    Donald O Mutti
    Ohio State University College of Optometry, 338 West Tenth Avenue, Columbus, OH 43210 1240, USA
    Invest Ophthalmol Vis Sci 46:3074-80. 2005
    ..To evaluate the contribution made by the ocular components to the emmetropization of spherical equivalent refractive error in human infants between 3 and 9 months of age...
  22. pmc Adaptation of a support vector machine algorithm for segmentation and visualization of retinal structures in volumetric optical coherence tomography data sets
    Robert J Zawadzki
    University of California, Davis, California 95817, USA
    J Biomed Opt 12:041206. 2007
    ..Our software has been tested successfully in clinical settings for its efficacy in assessing 3D retinal structures in healthy as well as diseased cases. Our tool facilitates diagnosis and treatment monitoring of retinal diseases...
  23. ncbi Precision of higher order aberration repeatability with NIDEK OPD-scan retinoscopic aberrometry
    Jackson Barreto
    Department of Ophthalmology, University of Sao Paulo, Brazil
    J Refract Surg 22:S1037-40. 2006
    ..To evaluate repeatability of the total high order aberrations with a retinoscopic wavefront sensor...
  24. ncbi The influence of cycloplegia in objective refraction
    J Jorge
    Department of Physics Optometry, School of Sciences, University of Minho, Braga, Portugal
    Ophthalmic Physiol Opt 25:340-5. 2005
    The purpose of this study was to compare refractions measured with an autorefractor and by retinoscopy with and without cycloplegia...
  25. pmc Imaging polarimetry and retinal blood vessel quantification at the epiretinal membrane
    Masahiro Miura
    Department of Ophthalmology, Tokyo Medical University, Japan
    J Opt Soc Am A Opt Image Sci Vis 24:1431-7. 2007
    ..Depolarized light images were useful for examining the retinal vasculature in the presence of retinal disease...
  26. ncbi 3D phase diversity: a myopic deconvolution method for short-exposure images: application to retinal imaging
    Guillaume Chenegros
    Department of Optics, Office National d Etudes et de Recherches Aerospatiales, Chatillon Cedex, France
    J Opt Soc Am A Opt Image Sci Vis 24:1349-57. 2007
    ..The joint deconvolution is further constrained by an additional longitudinal support constraint derived from a 3D interpretation of the phase-diversity technique. This method is validated by simulated retinal images...
  27. ncbi Diabetic retinopathy: the unmet needs for screening and a review of potential solutions
    Stephen H Sinclair
    Ophthalmology, Drexel University School of Medicine, Suite 100, 311 E Baltimore Avenue, Media, PA 19063, USA
    Expert Rev Med Devices 3:301-13. 2006
    ....
  28. ncbi Elastic registration for retinal images based on reconstructed vascular trees
    Bin Fang
    Department of Computer Science, Chongqing University, PR China
    IEEE Trans Biomed Eng 53:1183-7. 2006
    ..Experiment results validated the effectiveness of the elastic matching algorithm and its advantage over the weak affine model for registration of retinal fundus images...
  29. ncbi Quantitative analysis of multi-spectral fundus images
    I B Styles
    School of Computer Science, The University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, United Kingdom
    Med Image Anal 10:578-97. 2006
    ..The results are in agreement with known tissue histology for normal healthy subjects. We also present an early result which suggests that, with further development, the technique could be used to successfully detect retinal haemorrhages...
  30. ncbi Repeatability (test-retest variability) of refractive error measurement in clinical settings
    Jaakko Leinonen
    Department of Ophthalmology, Vaasa Central Hospital, Vaasa, Finland
    Acta Ophthalmol Scand 84:532-6. 2006
    ..To estimate the repeatability of refractive error measurement (REM) in a clinical environment in cataractous, pseudophakic and healthy eyes...
  31. ncbi Retinal vessel segmentation using the 2-D Gabor wavelet and supervised classification
    João V B Soares
    Institute of Mathematics and Statistics, University of Sao Paulo, 05508 090 Brazil
    IEEE Trans Med Imaging 25:1214-22. 2006
    ..We are making our implementation available as open source MATLAB scripts for researchers interested in implementation details, evaluation, or development of methods...
  32. ncbi Automated microaneurysm detection using local contrast normalization and local vessel detection
    Alan D Fleming
    Biomedical Physics, University of Aberdeen, Aberdeen, AB25 2ZD, UK
    IEEE Trans Med Imaging 25:1223-32. 2006
    ..Results are presented for detection of individual MAs and for detection of images containing MAs. Images containing MAs are detected with sensitivity 85.4% and specificity 83.1%...
  33. ncbi [Asphericity of the cornea and astigmatism]
    T Seiler
    Institut für Refractive und Ophthalmo Chirurgie IROC, Zurich, Schweiz
    Klin Monbl Augenheilkd 222:977-82. 2005
    ..Regarding astigmatism of the cornea, curvature as well as asphericity depend on the meridional axis. Their functional dependence and relation to the quality of the retinal image are still unclear...
  34. ncbi Reliability of the compensation comparison method for measuring retinal stray light studied using Monte-Carlo simulations
    Joris E Coppens
    Netherlands Ophthalmic Research Institute, Meibergdreef 47 1105BA, Amsterdam, Netherlands
    J Biomed Opt 11:054010. 2006
    ..07 logarithmic units on average) for estimation of the stray light value. Bias is virtually zero. Furthermore, a reliability index was derived from the responses and found to be effective...
  35. ncbi Weighted Zernike expansion with applications to the optical aberration of the human eye
    Jayoung Nam
    Department of Mathematics, Indiana University, Bloomington, Indiana 47405, USA
    J Opt Soc Am A Opt Image Sci Vis 22:1709-16. 2005
    ..The weighted functions involve a free parameter. Clinical data on subjective refraction and aberration maps of individual subjects are used to determine an estimate for this parameter...
  36. ncbi Exploration of the retinal nerve fiber layer thickness by measurement of the linear dichroism
    Olivier Karim Naoun
    Centre Hospitalier Universitaire, Service d Ophtalmologie de l Hôpital Central, 29, Avenue du Marechal de Lattre de Tassigny, 54035 Nancy Cedex, France
    Appl Opt 44:7074-82. 2005
    ..The first clinical measurements show a different degree of polarization between normal and glaucomatous eyes and a good correlation with the results obtained by optical coherence tomography...
  37. ncbi Analysis of retinal vasculature using a multiresolution Hermite model
    Li Wang
    Department of Computer Science, University of Warwick, Coventry, U K
    IEEE Trans Med Imaging 26:137-52. 2007
    ..These show MHM to perform comparably with other retinal vessel labelling methods...
  38. ncbi Multiscan time-domain optical coherence tomography for retina imaging
    Carla Carmelo Rosa
    University of Porto and Instituto de Engenharla de Sistemas e Computadores Porto, Portugal
    Appl Opt 46:1795-808. 2007
    ....
  39. ncbi Retinal vessel centerline extraction using multiscale matched filters, confidence and edge measures
    Michal Sofka
    Department of Computer Science, Rensselaer Polytechnic Institute, Troy, NY 12180 3590, USA
    IEEE Trans Med Imaging 25:1531-46. 2006
    ..Finally, the new vesselness likelihood ratio is embedded into a vessel tracing framework, resulting in an efficient and effective vessel centerline extraction algorithm...
  40. ncbi Enhancing the signal-to-noise ratio in ophthalmic optical coherence tomography by image registration--method and clinical examples
    Thomas Martini Jørgensen
    Technical University of Denmark, Riso National Laboratory, Optics and Plasma Research Department, Roskilde, Denmark
    J Biomed Opt 12:041208. 2007
    ..The method is currently successfully being applied by medical doctors in a number of specific retinal case studies...
  41. ncbi Preliminary study on the association of vessel diameter variation and glaucoma
    A A Vlachokosta
    Institute of Communication and Computer Systems, 9 Iroon Polytechneiou str, 15780, Athens, Greece
    Conf Proc IEEE Eng Med Biol Soc 2007:888-91. 2007
    ..The statistical analysis of the variations of the vessels diameters revealed a significant difference between the two populations. This difference indicates a probable association between glaucoma and variations of the vessel diameter...
  42. ncbi Improvement of a retinal blood vessel segmentation method using the Insight Segmentation and Registration Toolkit (ITK)
    M Martinez-Perez
    Department of Computer Science Institute of Research in Applied Mathematics and Systems UNAM, Apdo Postal 20 726, Mexico, D F 04510
    Conf Proc IEEE Eng Med Biol Soc 2007:892-5. 2007
    ..96, than the Matlab version due to a decrease in FPR values and it is between 8 and 12 times faster than the original version. Furthermore, the ITK implementation is able to segment high-resolution images in an acceptable timescale...
  43. ncbi Semiautomatic detection and evaluation of autofluorescent areas in retinal images
    Radim Kolar
    Department of Biomedical Engineering, Brno University of Technology, Czech Republic
    Conf Proc IEEE Eng Med Biol Soc 2007:3327-30. 2007
    ..Results are compared with those obtained by experienced ophthalmologists...
  44. ncbi A comparison of photorefraction and retinoscopy in children
    A H Dahlmann-Noor
    J AAPOS 12:104; author reply 104-5. 2008
  45. ncbi Dynamic focus in optical coherence tomography for retinal imaging
    M Pircher
    Medical University of Vienna, Center for Biomedical Engineering and Physics, Vienna, Austria
    J Biomed Opt 11:054013. 2006
    ..We show that maintenance of a transverse resolution of approximately 4.4 microm can be achieved over an optical depth of 1 mm in a model eye and apply our method to imaging the human retina in vivo...
  46. ncbi Optic disc detection from normalized digital fundus images by means of a vessels' direction matched filter
    A R Youssif
    Department of Computer Science, Helwan University, Cairo, Egypt
    IEEE Trans Med Imaging 27:11-8. 2008
    ..The OD-center was detected correctly in 80 out of the 81 images (98.77%). In addition, the OD-center was detected correctly in all of the 40 images (100%) using the publicly available DRIVE dataset...
  47. ncbi A novel method for the automatic grading of retinal vessel tortuosity
    Enrico Grisan
    Department of Information Engineering, University of Padova, 35131 Padova, Italy
    IEEE Trans Med Imaging 27:310-9. 2008
    ..These vessels had been preliminarily ordered by a retina specialist by increasing perceived tortuosity. The proposed algorithm proved to be the best one in matching the clinically perceived vessel tortuosity...
  48. ncbi A novel vessel segmentation algorithm for pathological retina images based on the divergence of vector fields
    Benson Y Lam
    Department of Electronic Engneering, City University of Hong Kong, Kowloon, Hong Kong
    IEEE Trans Med Imaging 27:237-46. 2008
    ..Experiment results show that the method can avoid detecting false vessels in pathological regions and can produce reliable results for healthy regions...
  49. ncbi A variational method for geometric regularization of vascular segmentation in medical images
    Ali Gooya
    Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
    IEEE Trans Image Process 17:1295-312. 2008
    ..Quantitative results, as well as qualitative comparisons of segmentations, indicate that our regularization method is a promising tool to improve the efficiency of both techniques...
  50. ncbi Ultrahigh resolution optical coherence tomography and pancorrection for cellular imaging of the living human retina
    Enrique J Fernandez
    Biomedical Imaging Group, School of Optometry and Vision Sciences, Cardiff University, Wales, UK
    Opt Express 16:11083-94. 2008
    ..The presented technique has the potential to unveil photoreceptor development and pathogenesis as well as improved therapy monitoring of numerous retinal diseases...
  51. ncbi Improved detection of the central reflex in retinal vessels using a generalized dual-gaussian model and robust hypothesis testing
    Harihar Narasimha-Iyer
    Rensselaer Polytechnic Institute, Troy, NY 12180, USA
    IEEE Trans Inf Technol Biomed 12:406-10. 2008
    ..The proposed method yielded a sensitivity of 72% compared to 38% by the algorithm of Can et al., and 60% by the robust detection based on a single-Gaussian model. The specificity for the methods were 95%, 97%, and 98%, respectively...
  52. pmc Longitudinal chromatic aberration of the human infant eye
    Jingyun Wang
    Indiana University School of Optometry, Bloomington, IN 47405, USA
    J Opt Soc Am A Opt Image Sci Vis 25:2263-70. 2008
    ..The implications for visual performance, defocus detection, and measurement of refraction are discussed...
  53. ncbi Extraction and reconstruction of retinal vasculature
    M H Ahmad Fadzil
    Intelligent Imaging Technology Group, Electrical and Electronic Engineering Programme, Universiti Teknologi PETRONAS, Bandar Sri Iskandar, Tronoh, Perak, Malaysia
    J Med Eng Technol 31:435-42. 2007
    ..91 - 0.95, a sensitivity range (ability to detect vessel pixels) of 0.91 - 0.95 and a specificity range (ability to detect non-vessel pixels) of 0.88 - 0.94...
  54. ncbi Study on the effects of monochromatic aberrations in the accommodation response by using adaptive optics
    Enrique J Fernandez
    Laboratorio de Optica, Departamento de Fisica, Universidad de Murcia, Campus de Espinardo Edificio C, 30071 Murcia, Spain
    J Opt Soc Am A Opt Image Sci Vis 22:1732-8. 2005
    ..However, neither the latency time nor the precision of the accommodation were affected. These results may indicate that the monochromatic aberrations play a role in driving the accommodation response...
  55. ncbi The effect of off-the-visual-axis retinoscopy on objective refractive measurement
    David W Jackson
    Cullen Eye Institue, Baylor College of Medicine, and Department of Ophthalmology, Texas Children s Hospital, Houston, 77030, USA
    Am J Ophthalmol 137:1101-4. 2004
    To determine the effect of off-axis retinoscopy on objective refractive measurement.
  56. ncbi Corneal birefringence compensation for polarization sensitive optical coherence tomography of the human retina
    Michael Pircher
    Medical University of Vienna, Center for Biomedical Engineering and Physics, Wahringer Strasse 13, A 1090 Vienna, Austria
    J Biomed Opt 12:041210. 2007
    ..We implemented the method in a state of the art spectral domain PS-OCT system and demonstrate it in a test sample and human retina in vivo...
  57. ncbi Three-dimensional optical coherence tomography at 1050 nm versus 800 nm in retinal pathologies: enhanced performance and choroidal penetration in cataract patients
    Boris Povazay
    Cardiff University, School of Optometry and Vision Sciences, Biomedical Imaging Group, Cardiff, Wales, CF24 4LU, United Kingdom
    J Biomed Opt 12:041211. 2007
    ..Results achieved with 3-D OCT at 1050 nm reveal, for the first time, decisive improvements in image quality for patients with retinal pathologies and clinically significant cataract...
  58. pmc Spectral oximetry assessed with high-speed ultra-high-resolution optical coherence tomography
    Larry Kagemann
    University of Pittsburgh School of Medicine, Department of Ophthalmology, Ophthalmology and Visual Sciences Research Center, UPMC Eye Center, Eye and Ear Institute, Pittsburgh, Pennsylvania 15213, USA
    J Biomed Opt 12:041212. 2007
    ..0217) (mean+/-standard deviation). A difference between arterial and venous blood saturation was detected. This suggests that retinal oximetry may possibly be added as a metabolic measurement in structural imaging devices...
  59. ncbi Vectorial reconstruction of retinal blood flow in three dimensions measured with high resolution resonant Doppler Fourier domain optical coherence tomography
    Roland Michaely
    Ecole Polytechnique Federale de Lausanne, Laboratoire d Optique Biomedicale, CH 1015 Lausanne, Switzerland
    J Biomed Opt 12:041213. 2007
    ..We apply the algorithm on a measured 3-D resonant Doppler dataset. For validation of the reproducibility, we compare two independently obtained 3-D flow maps of the same volunteer and region...
  60. ncbi Real-time spectral domain Doppler optical coherence tomography and investigation of human retinal vessel autoregulation
    Bradley A Bower
    Duke University, Department of Biomedical Engineering, Durham, North Carolina 27708, USA
    J Biomed Opt 12:041214. 2007
    ..Doppler flow repeatability data are presented to address the high standard deviations in the measurements...
  61. ncbi In vivo total retinal blood flow measurement by Fourier domain Doppler optical coherence tomography
    Yimin Wang
    University of Southern California, Doheny Eye Institute and Department of Ophthalmology, Keck School of Medicine, 1355 San Pablo Street, DVRC 160B, Los Angeles, California 90033, USA
    J Biomed Opt 12:041215. 2007
    ..35 mm/s to 51.13 mm/s. The total retinal venous and arterial flow both added up to approximately 54 microl/min. We believe this is the first demonstration of total retinal blood flow measurement using the OCT technique...
  62. ncbi Detection of lesions in retina photographs based on the wavelet transform
    Gwenole Quellec
    Lab de Traitement de l Inf Medicale Inserm, CHU, Brest, France
    Conf Proc IEEE Eng Med Biol Soc 1:2618-21. 2006
    ..More, it could be generalized to other small lesions. Results are evaluated on a manually segmented retinal images database for different usual mother wavelets...
  63. ncbi Minimum distance mapping using three-dimensional optical coherence tomography for glaucoma diagnosis
    Boris Povazay
    Cardiff University, School of Optometry and Vision Sciences, Biomedical Imaging Group, Cardiff, Wales CF24 4LU, United Kingdom
    J Biomed Opt 12:041204. 2007
    ..For the purposes of this pilot study, we present data from a normal subject and from two patients with characteristic optic nerve and retinal nerve fiber layer changes secondary to glaucoma...
  64. ncbi Elastic registration for auto-fluorescence image averaging
    Libor Kubecka
    Dept of Biomed Eng, Brno Univ of Technol Brno, 61200, Czech Republic
    Conf Proc IEEE Eng Med Biol Soc 1:1948-51. 2006
    ..The concept and some details of the MI-based regularized registration, together with evaluation of test results form the core of the contribution...
  65. ncbi High-speed complex conjugate resolved retinal spectral domain optical coherence tomography using sinusoidal phase modulation
    Yuankai K Tao
    Department of Biomedical Engineering, Duke University, 136 Hudson Hall, Durham, North Carolina 27708, USA
    Opt Lett 32:2918-20. 2007
    ..Densely sampled (3000 A-scans/image, acquired at 4.3 images/s) full-depth in vivo images of optic nerve head show CCA suppression for most image reflections to the noise floor...
  66. ncbi [Wavefront analysis and adaptive optics]
    J D Stevens
    FRCOphth, FRCS Moorfields Eye Hospital, London
    Ophthalmologe 100:593-602. 2003
    ..Finally, the first international clinical results of wavefront guided excimer laser surgery are reviewed and critically commented...
  67. ncbi [The appearance of refractive errors and eyeballs position disorders in the group of premature babies treated at the Chair and Clinic of Ophthalmology of the Pomeranian Medical University in the years 1999-2005]
    Monika Modrzejewska
    Katedra i Klinika Okulistyki Pomorskiej Akademii Medycznej w Szczecinie al Powstańców Wlkp 72, 70 111 Szczecin
    Ann Acad Med Stetin 53:57-62. 2007
    ..The aim of the study was to analyze the frequency of occurrence of hypermetropia, myopia, astigmatism and eyeballs position disorders in the form of strabismus and nystagmus in premature babies...
  68. ncbi Cardinal points and image-object magnification with an accommodative lens implant (1 CU)
    Achim Langenbucher
    Department of Ophthalmology, University of Erlangen Nurnberg, Schwabachanlage 6, D 91054 Erlangen, Germany
    Ophthalmic Physiol Opt 23:61-70. 2003
    ..the positions of the cardinal points, (2). the distance of the object conjugate with the retina, and (3). the image-object magnification. These theoretical accommodation data are compared with clinical measurements...
  69. ncbi Comprehensive vision care in urban communities: the pediatric outreach program
    Valerie M Kattouf
    Illinois College of Optometry, Chicago, Illinois 60616, USA
    Optometry 80:29-35. 2009
    ..Grant funds assisted in the ability to deliver vision services and spectacles to uninsured children. This report describes the structure and organization of the POP and presents the visual data...
  70. ncbi Neodymium:YAG pupilloplasty in pediatric aphakia
    C G Summers
    Department of Ophthalmology, University of Minnesota, Minneapolis 55455
    J Pediatr Ophthalmol Strabismus 28:155-6. 1991
    An adequate pupillary aperture is required for accurate ophthalmoscopy and retinoscopy in pediatric aphakia...
  71. ncbi Visual optics in toads (Bufo americanus)
    U Mathis
    Section of Neurobiology and Behavior, Cornell University, Ithaca, New York 14853
    J Comp Physiol A 163:201-13. 1988
    ..By subtracting the measurement artefact for retinoscopy, the true resting focus was found to be nearly emmetropic. 7...
  72. ncbi Prevalence of myopia and hyperopia among urban and rural schoolchildren in Poland
    Damian Czepita
    Katedra i Klinika Okulistyki Pomorskiej Akademii Medycznej w Szczecinie al Powstańców Wlkp 72, 70 111 Szczecin
    Ann Acad Med Stetin 54:17-21. 2008
    ..Whereas, in Poland there was not a single paper yet published concerning this topic. That is why the aim of this paper is to describe the prevalence of myopia and hyperopia among urban and rural schoolchildren in Poland...
  73. pmc Causes of childhood blindness in the northeastern states of India
    Harsha Bhattacharjee
    HV Desai Eye Hospital, Pune, India
    Indian J Ophthalmol 56:495-9. 2008
    ..There is lacuna regarding the data on causes of blindness and severe visual impairment in children from this region...
  74. ncbi Neural pathways subserving negative lens-induced emmetropization in chicks--insights from selective lesions of the optic nerve and ciliary nerve
    Christine Wildsoet
    School of Optometry, University of California Berkeley, CA 94720 2020, USA
    Curr Eye Res 27:371-85. 2003
    ..Data from previous related studies are equivocal...
  75. ncbi Noncycloplegic photorefractive screening in pre-school children with the "PowerRefractor" in a pediatric practice
    Frank Schaeffel
    Section of Neurobiology of Eye, University Eye Hospital, Tubingen, Germany
    Optom Vis Sci 84:630-9. 2007
    ..To evaluate the usefulness of the screening for refractive errors, we retrospectively analyzed the data of a large number of unselected children of different ages in a pediatric practice in Tuebingen, Germany...
  76. ncbi Scleral remodeling during the development of and recovery from axial myopia in the tree shrew
    N A McBrien
    Department of Optometry and Vision Sciences, The University of Melbourne, Victoria, Australia
    Invest Ophthalmol Vis Sci 41:3713-9. 2000
    ..Scleral glycosaminoglycan (GAG) synthesis and content as well as scleral dry weight changes were monitored as indicators of remodeling in myopic and recovering tree shrew sclerae...
  77. ncbi Refractive status of indigenous people in the northwestern Amazon region of Brazil
    Frank Thorn
    New England College of Optometry, Boston, Massachusetts 02115, USA
    Optom Vis Sci 82:267-72. 2005
    ..The purpose of this study was to investigate the refractive status of the illiterate indigenous people of the upper Rio Negro region of the Amazon rain forest in northwestern Brazil...
  78. pmc The albino chick as a model for studying ocular developmental anomalies, including refractive errors, associated with albinism
    Jodi Rymer
    Wildsoet Lab, 588 Minor Hall, University of California Berkeley, Berkeley CA 94720 2020, USA
    Exp Eye Res 85:431-42. 2007
    ..The ocular development of both albino and normally pigmented chicks was monitored using retinoscopy to measure refractive errors and high frequency A-scan ultrasonography to measure axial ocular dimensions...
  79. ncbi A comparative clinical survey of the prevalence of refractive errors and eye diseases in urban and rural school children
    Nazia Uzma
    Department of Physiology, Deccan College of Medical Sciences, Hyderabad, India
    Can J Ophthalmol 44:328-33. 2009
    ..To assess the prevalence of refractive error and common ocular diseases in school-aged children in urban and rural populations in and around Hyderabad, India...
  80. ncbi Changes of the accommodative amplitude and the anterior chamber depth after implantation of an accommodative intraocular lens
    Hanka Schneider
    Department of Ophthalmology, Rostock University, Doberaner Strasse 140, 18055, Rostock, Germany
    Graefes Arch Clin Exp Ophthalmol 244:322-9. 2006
    ....
  81. ncbi Visual outcome in 879 children treated for strabismus: insufficient accommodation and vision deprivation, deficient emmetropisation and anisometropia
    Robert M Ingram
    Kettering General Hospital, Northants, United Kingdom
    Strabismus 17:148-57. 2009
    ..To identify the effect of infant hypermetropia on residual amblyopia in children remaining after treatment...
  82. pmc Constant light rearing disrupts compensation to imposed- but not induced-hyperopia and facilitates compensation to imposed myopia in chicks
    Varuna Padmanabhan
    School of Optometry, 588 Minor Hall, University of California at Berkeley, Berkeley, CA 94720 2020, USA
    Vision Res 47:1855-68. 2007
    ..We also studied recovery responses, i.e. from lens-induced changes in CL as well as CL-induced changes alone or combined with lens-induced changes in eyes returned to normal diurnal lighting (NL)...
  83. ncbi Theoretical and measured pseudophakic accommodation after implantation of a new accommodative posterior chamber intraocular lens
    Achim Langenbucher
    Department of Ophthalmology and University Eye Hospital, University Erlangen Nurnberg, Erlangen, Germany
    Arch Ophthalmol 121:1722-7. 2003
    ..To analyze different techniques of measuring accommodation after implantation of a new accommodative posterior chamber intraocular lens (PCIOL)...
  84. ncbi Evolution of central corneal thickness in children with congenital glaucoma requiring glaucoma surgery
    Isabel Oberacher-Velten
    Department of Paediatric Ophthalmology, Strabismology, and Ophthalmogenetics, University of Regensburg, Franz Josef Strauss Allee 11, 93053 Regensburg, Germany
    Graefes Arch Clin Exp Ophthalmol 246:397-403. 2008
    ..The purpose of the study was to investigate the evolution of central corneal thickness (CCT) in correlation to the intraocular pressure (IOP) in children with congenital glaucoma before and after glaucoma surgery...
  85. ncbi Identification of infants with significant refractive error and strabismus in a population screening program using noncycloplegic videorefraction and orthoptic examination
    Shirley Anker
    Visual Development Unit, Department of Psychology, University College London, London, United Kingdom
    Invest Ophthalmol Vis Sci 44:497-504. 2003
    ..without cycloplegia could effectively serve as a first stage of screening for refractive errors, measured by standard cycloplegic retinoscopy. The screening also included an orthoptic examination for detection of strabismus.
  86. pmc Astigmatism in monkeys with experimentally induced myopia or hyperopia
    Chea su Kee
    College of Optometry, University of Houston, Houston, Texas 77204 2020, USA
    Optom Vis Sci 82:248-60. 2005
    ..This study examines the frequency and characteristics of astigmatism in infant monkeys that developed axial ametropias as a result of altered early visual experience...
  87. ncbi Quantification of chick lens alphaA- and delta-crystallins in experimentally induced ametropia
    Sophia Zaidi
    School of Optometry, University of Waterloo, Waterloo, Ontario, Canada
    Mol Vis 8:472-6. 2002
    ..The chicks were refracted twice, once on the day of hatching and again seven days later, using streak retinoscopy. On day 7 chicks were sacrificed, lenses decapsulated, and soluble proteins were isolated...
  88. pmc Ophthalmic manifestations of tuberous sclerosis: a population based study
    S A Rowley
    Department of Ophthalmology, Royal United Hospital, Bath, UK
    Br J Ophthalmol 85:420-3. 2001
    ..Tuberous sclerosis complex (TSC) has retinal and non-retinal ophthalmic manifestations. This study was designed to determine the prevalence of the ophthalmic manifestations and of refractive errors in a population of patients with TSC...
  89. ncbi The eye of the hooded seal, Cystophora cristata, in air and water
    J G Sivak
    School of Optometry, University of Waterloo, Ontario, Canada
    J Comp Physiol A 165:771-7. 1989
    ..The measures, made by conventional retinoscopy and by photorefraction, show that the seals are moderately hyperopic (2-3 diopters) in water and moderately ..
  90. ncbi Hyoscine skin patches for drooling dilate pupils and impair accommodation: spectacle correction for photophobia and blurred vision may be warranted
    Manzar Saeed
    Tennent Institute of Ophthalmology, Glasgow, UK
    Dev Med Child Neurol 49:426-8. 2007
    ..Binocular visual acuity, pupil reaction, pupil diameter, and dynamic retinoscopy were recorded before and after instilling guttae cyclopentolate 1%...
  91. ncbi Retinoscopy in infants using a near noncycloplegic technique, cycloplegia with tropicamide 1%, and cycloplegia with cyclopentolate 1%
    J D Twelker
    University of California, Berkeley, School of Optometry, 94720 2020, USA
    Optom Vis Sci 78:215-22. 2001
    This study compares retinoscopy in infants using a near noncycloplegic technique, cycloplegia with tropicamide 1%, and cycloplegia with cyclopentolate 1%...
  92. ncbi Astigmatism and Amblyopia among Native American Children (AANAC): design and methods
    J M Miller
    Department of Ophthalmology, University of Arizona, Tucson, Arizona, United States of America
    Ophthalmic Epidemiol 7:187-207. 2000
    ..and specificity for detection of significant astigmatism, as measured by a technique that uses both cycloplegic retinoscopy and cycloplegic autorefraction, is determined for each of the four screening tools...
  93. ncbi Refractive error at birth and its relation to gestational age
    Sara Varughese
    Department of Paediatric Ophthalmology, Dr Shroff s Charity Eye Hospital, Daryaganj, Delhi, India
    Curr Eye Res 30:423-8. 2005
    ..The refractive status of premature infants is not well studied. This study was done to find the norms of refractive error in newborns at different gestational ages...
  94. ncbi Incidence of ocular pathologies in Italian children with Down syndrome
    F Fimiani
    Department of Ophthalmology, University of Napoli Federico II, Napoli, Italy
    Eur J Ophthalmol 17:817-22. 2007
    ..This study identifies the incidence of primary ocular pathologies in a population of Italian children with Down syndrome...
  95. ncbi [High myopia and retinal ultrastructure of albino guinea-pigs]
    Jie Yue Wang
    Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
    Zhong Nan Da Xue Xue Bao Yi Xue Ban 32:282-7. 2007
    ..To explore the relationship between melanin synthesis and the congenital high myopia of albino guinea-pigs...
  96. ncbi Suture-related complications after congenital cataract surgery: Vicryl versus Mersilene sutures
    Shai M Bar-Sela
    Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
    J Cataract Refract Surg 33:301-4. 2007
    ..To evaluate 10-0 polyester sutures (Mersilene) and 10-0 absorbable polyglactin sutures (Vicryl) for small-incision congenital cataract surgery...
  97. ncbi Measurement of accommodation after implantation of an accommodating posterior chamber intraocular lens
    Achim Langenbucher
    Department of Ophthalmology and University Eye Hospital, University Erlangen Nurnberg, Germany
    J Cataract Refract Surg 29:677-85. 2003
    ..To analyze techniques of measuring accommodation after implantation of an accommodating posterior chamber intraocular lens (PC IOL)...
  98. ncbi Screening for refractive errors with the Topcon PR2000 Pediatric Refractometer
    C Williams
    Dept of Ophthalmology, Bristol Eye Hospital, United Kingdom
    Invest Ophthalmol Vis Sci 41:1031-7. 2000
    ..The present study was conducted to determine the accuracy of the device in a largely clinical population...
  99. ncbi Comparison of 6-month results of implantation of the 1CU accommodative intraocular lens with conventional intraocular lenses
    Michael Kuchle
    Department of Ophthalmology and University Eye Hospital, University Erlangen Nurnberg, Erlangen, Germany
    Ophthalmology 111:318-24. 2004
    ..To evaluate the clinical results of implantation of the new 1CU accommodative intraocular lens (IOL) in cataract patients and to compare results with those of conventional IOLs...
  100. ncbi Two models of experimental myopia in the mouse
    V A Barathi
    Singapore Eye Research Institute, 11 Third Hospital Avenue, Singapore 168751, Singapore
    Vision Res 48:904-16. 2008
    ..The purpose of this study was to test the response of the mouse eye to two methods for the induction of experimental myopia...
  101. ncbi Occurrence of refractive errors among students who before the age of two grew up under the influence of light emitted by incandescent or fluorescent lamps
    Damian Czepita
    Katedra i Klinika Okulistyki Pomorskiej Akademii Medycznej al Powstańców Wlkp 72, 70 111 Szczecin
    Ann Acad Med Stetin 51:33-6. 2005
    ..The aim of the study was to determine whether the development of refractive errors could be associated with exposure to light emitted by incandescent or fluorescent lamps...

Research Grants16

  1. Analysis of the Data from Vision in Preschoolers (VIP) Study
    Gui Shuang Ying; Fiscal Year: 2010
    ..National Eye Institute-sponsored Expert Panel Meeting in July 2005: (1) Evaluate the validity of noncycloplegic retinoscopy, Retinomax Autorefractor, SureSight Vision Screener, and Lea Symbols VA test for detecting VIP-defined ..
  2. OCULAR DEVELOPMENT IN INFANCY/EARLY CHILDHOOD
    Donald Mutti; Fiscal Year: 2005
    ..abstract_text> ..
  3. DOPAMINE/GLUTAMATE AND HYPOXIC INJURY IN NEWBORN BRAIN
    David Wilson; Fiscal Year: 2009
    ..This understanding will be the basis for more effective treatment of patients who have been subjected to a period(s) of insufficient oxygen delivery to the brain. ..
  4. The Predictive Value of Pre-plus Disease in ROP
    David Wallace; Fiscal Year: 2008
    ..abstract_text> ..
  5. Low-cost, portable, computer assisted imaging for diabe*
    Michael Abramoff; Fiscal Year: 2008
    ..Our overall aim is to validate and optimize a low-cost, high quality, patient friendly imaging system for the early diagnosis of diabetic retinopathy. ..
  6. Development of Retinal Receptive Fields
    NORBERTO GRZYWACZ; Fiscal Year: 2006
    ..In such a transplantation, cells must "self-organize" as during development. ..
  7. EMMETROPIZATION AND DEVELOPMENT OF MYOPIA IN CHILDREN
    Jane Gwiazda; Fiscal Year: 2005
    ....
  8. Correlation Among Retinal Directionally Selective Cells
    NORBERTO GRZYWACZ; Fiscal Year: 2005
    ..Retinal binding defects may contribute to some of these integrative problems, but even if not, retinal strategies and mechanisms may shed light on mechanisms in other areas of the brain. ..
  9. Central Scotomas in AMD and Cortical Remapping
    Janet Sunness; Fiscal Year: 2005
    ....
  10. VISION SCREENING IN PRESCHOOLERS/CHAIR GRANT
    Paulette Schmidt; Fiscal Year: 2004
    ..abstract_text> ..
  11. HIGH-RESOLUTION IMAGING OF OCULAR MELANOMA AND RETINA
    Dirk Uwe Bartsch; Fiscal Year: 2003
    ..Since we can measure and characterize these aberrations, we can develop digital inverse filter based on our experience in image reconstruction to correct the acquired images. ..
  12. CONTACT LENSES AND MYOPIA (CLAMP) STUDY
    JEFFREY WALLINE; Fiscal Year: 2003
    ..The CLAMP Study is the ideal scope and size of study to train Dr. Walline to become an independent investigator and has the potential to change the standard of care for young children who become nearsighted. ..
  13. EYE GROWTH DURING INFANCY
    Scott Lambert; Fiscal Year: 2001
    ..In addition, by understanding the mechanisms retarding ocular growth, it may be possible to modulate the excessive ocular growth which occurs in certain pathological conditions such as retinopathy of prematurity. ..
  14. OXYGEN LEVELS AND RADIOSENSITIVITY IN TUMORS
    David Wilson; Fiscal Year: 2001
    ..Phosphors will be selected which can be injected intravenously and then, after the oxygen measurements, are excreted by the kidney. ..
  15. NEURAL AND HORMONAL PATHWAYS IN OCULAR DEVELOPMENT
    Howard Howland; Fiscal Year: 2003
    ..Behavioral, surgical, biochemical, histological, and mathematical methods will be employed to answer these questions. ..
  16. Nanosensor probes for oxygen imaging in vivo
    David Wilson; Fiscal Year: 2009
    ..e. ready for larger scale synthesis and rigorous toxicology studies preparatory to use in clinical trials. ..