A Roorda

Summary

Affiliation: University of Houston
Country: USA

Publications

  1. ncbi request reprint Adaptive optics ophthalmoscopy
    A Roorda
    University of Houston College of Optometry, TX, USA
    J Refract Surg 16:S602-7. 2000
  2. ncbi request reprint Optical fiber properties of individual human cones
    Austin Roorda
    University of Houston College of Optometry, Houston, TX, USA
    J Vis 2:404-12. 2002
  3. pmc Wave aberrations of the isolated crystalline lens
    Austin Roorda
    College of Optometry, University of Houston, Houston, TX, USA
    J Vis 4:250-61. 2004
  4. ncbi request reprint Evaluating the lateral resolution of the adaptive optics scanning laser ophthalmoscope
    Yuhua Zhang
    University of California, Berkeley, School of Optometry, Room 485, Minor Hall, Berkeley, California 94720 2020, USA
    J Biomed Opt 11:014002. 2006
  5. pmc Wave aberrations in rhesus monkeys with vision-induced ametropias
    Ramkumar Ramamirtham
    College of Optometry, University of Houston, 505 J Davis Armistead Building, Houston, TX 77204 2020, USA
    Vision Res 47:2751-66. 2007
  6. ncbi request reprint The arrangement of the three cone classes in the living human eye
    A Roorda
    Center for Visual Science, University of Rochester, New York 14627, USA
    Nature 397:520-2. 1999
  7. ncbi request reprint Packing arrangement of the three cone classes in primate retina
    A Roorda
    University of Houston College of Optometry, Houston, TX 77204 6052, USA
    Vision Res 41:1291-306. 2001
  8. ncbi request reprint Optical slicing of human retinal tissue in vivo with the adaptive optics scanning laser ophthalmoscope
    Fernando Romero-Borja
    College of Optometry, University of Houston, 4800 Calhoun Road, Houston, Texas 77204 2020, USA
    Appl Opt 44:4032-40. 2005
  9. ncbi request reprint Adaptive optics scanning laser ophthalmoscopy for in vivo imaging of lamina cribrosa
    Abhiram S Vilupuru
    College of Optometry, University of Houston, TX 77204 2020, USA
    J Opt Soc Am A Opt Image Sci Vis 24:1417-25. 2007
  10. ncbi request reprint Effects of optically imposed astigmatism on emmetropization in infant monkeys
    Chea su Kee
    College of Optometry, University of Houston, Houston, Texas 77204 2020, USA
    Invest Ophthalmol Vis Sci 45:1647-59. 2004

Collaborators

Detail Information

Publications30

  1. ncbi request reprint Adaptive optics ophthalmoscopy
    A Roorda
    University of Houston College of Optometry, TX, USA
    J Refract Surg 16:S602-7. 2000
    ..Application of adaptive optics technology for ophthalmoscopy promises continued progress toward understanding the basic properties of the living human retina and also for clinical applications...
  2. ncbi request reprint Optical fiber properties of individual human cones
    Austin Roorda
    University of Houston College of Optometry, Houston, TX, USA
    J Vis 2:404-12. 2002
    ..The implication is that the optical fiber properties of an ensemble of cones mimic the tuning properties of a single cone...
  3. pmc Wave aberrations of the isolated crystalline lens
    Austin Roorda
    College of Optometry, University of Houston, Houston, TX, USA
    J Vis 4:250-61. 2004
    ....
  4. ncbi request reprint Evaluating the lateral resolution of the adaptive optics scanning laser ophthalmoscope
    Yuhua Zhang
    University of California, Berkeley, School of Optometry, Room 485, Minor Hall, Berkeley, California 94720 2020, USA
    J Biomed Opt 11:014002. 2006
    ..We also reveal the relationships among the lateral resolution and other three measures of the AOSLO imaging property including the Strehl ratio, the PSF, and the root mean square (rms) of wavefront aberration...
  5. pmc Wave aberrations in rhesus monkeys with vision-induced ametropias
    Ramkumar Ramamirtham
    College of Optometry, University of Houston, 505 J Davis Armistead Building, Houston, TX 77204 2020, USA
    Vision Res 47:2751-66. 2007
    ..The results from our study suggest that the higher amounts of wave aberrations observed in ametropic humans are likely to be a consequence, rather than a cause, of abnormal refractive development...
  6. ncbi request reprint The arrangement of the three cone classes in the living human eye
    A Roorda
    Center for Visual Science, University of Rochester, New York 14627, USA
    Nature 397:520-2. 1999
    ..This arrangement reduces the eye's ability to recover colour variations of high spatial frequency in the environment but may improve the recovery of luminance variations of high spatial frequency...
  7. ncbi request reprint Packing arrangement of the three cone classes in primate retina
    A Roorda
    University of Houston College of Optometry, Houston, TX 77204 6052, USA
    Vision Res 41:1291-306. 2001
    ..In all eyes, the M and L cones are arranged randomly. This gives rise to patches containing cones of a single type. In human, but not in monkey, the arrangement of S-cones cannot be distinguished from random...
  8. ncbi request reprint Optical slicing of human retinal tissue in vivo with the adaptive optics scanning laser ophthalmoscope
    Fernando Romero-Borja
    College of Optometry, University of Houston, 4800 Calhoun Road, Houston, Texas 77204 2020, USA
    Appl Opt 44:4032-40. 2005
    ....
  9. ncbi request reprint Adaptive optics scanning laser ophthalmoscopy for in vivo imaging of lamina cribrosa
    Abhiram S Vilupuru
    College of Optometry, University of Houston, TX 77204 2020, USA
    J Opt Soc Am A Opt Image Sci Vis 24:1417-25. 2007
    ..The AOSLO provides high-quality images of the lamina cribrosa and may have potential as a tool for early identification of glaucoma...
  10. ncbi request reprint Effects of optically imposed astigmatism on emmetropization in infant monkeys
    Chea su Kee
    College of Optometry, University of Houston, Houston, Texas 77204 2020, USA
    Invest Ophthalmol Vis Sci 45:1647-59. 2004
    ..Although astigmatism is prevalent during early infancy, the influence of astigmatism on early refractive development is unclear. This study was undertaken to determine the effects of astigmatism on emmetropization in monkeys...
  11. pmc Spatially variant changes in lens power during ocular accommodation in a rhesus monkey eye
    Abhiram S Vilupuru
    College of Optometry, University of Houston, Houston, TX, USA
    J Vis 4:299-309. 2004
    ..The greater increase in optical power near the central region of the lens, combined with an accommodative pupillary miosis, would serve to maximize accommodative refractive change while maintaining acceptable image quality...
  12. ncbi request reprint A population study on changes in wave aberrations with accommodation
    Han Cheng
    College of Optometry, University of Houston, Houston, TX 77204 2020, USA
    J Vis 4:272-80. 2004
    ..Therefore, a typical eye will benefit over the entire accommodative range (0-6 D) if aberrations are corrected for distance viewing...
  13. ncbi request reprint Theoretical modeling and evaluation of the axial resolution of the adaptive optics scanning laser ophthalmoscope
    Krishnakumar Venkateswaran
    College of Optometry, University of Houston, Houston, TX 77204 2020, USA
    J Biomed Opt 9:132-8. 2004
    ..However, when small pinholes are used to maximize resolution, alignment becomes critical...
  14. ncbi request reprint Predicting and assessing visual performance with multizone bifocal contact lenses
    Joy A Martin
    University of Houston College of Optometry, 505 J Davis Armistead Bldg, Houston, TX 77204 2020, USA
    Optom Vis Sci 80:812-9. 2003
    ..Also, to investigate the relationship between the patient's predicted and actual visual benefit with bifocal contact lenses...
  15. ncbi request reprint Optimal pupil size in the human eye for axial resolution
    William J Donnelly
    University of Houston College of Optometry, 505 J Davis Armistead Building, Houston, Texas 77204 2020, USA
    J Opt Soc Am A Opt Image Sci Vis 20:2010-5. 2003
    ..66 mm (sd)]. When small confocal pinholes are used, the maximum detected light is obtained with a pupil size of 4.90 mm +/- 1.04 mm sd. It is recommended to use larger pupil sizes in imaging applications where axial resolution is desired...
  16. pmc Monochromatic ocular wave aberrations in young monkeys
    Ramkumar Ramamirtham
    College of Optometry, University of Houston, Houston, TX 77204 2020, USA
    Vision Res 46:3616-33. 2006
    ....
  17. ncbi request reprint Photon signal detection and evaluation in the adaptive optics scanning laser ophthalmoscope
    Yuhua Zhang
    School of Optometry, University of California, Berkeley 94720 2020, USA
    J Opt Soc Am A Opt Image Sci Vis 24:1276-83. 2007
    ..The study presents a practical strategy that can be used to test the photodetector for either initial evaluation or subsequent performance in in-line inspection...
  18. ncbi request reprint MEMS-based adaptive optics scanning laser ophthalmoscopy
    Yuhua Zhang
    School of Optometry, University of California, California 94720 2020, USA
    Opt Lett 31:1268-70. 2006
    ..The significant increase in throughput allows for a confocal pinhole whose diameter is less than the Airy disc of the collection lens, thereby fully exploiting the axial resolution capabilities of the system...
  19. ncbi request reprint Direct and noninvasive assessment of parafoveal capillary leukocyte velocity
    Joy A Martin
    College of Optometry, University of Houston, Houston, Texas, USA
    Ophthalmology 112:2219-24. 2005
    ..In this study, using the AOSLO, we demonstrate a new method to investigate retinal parafoveal capillary leukocyte velocity...
  20. ncbi request reprint Visual performance in emmetropia and low myopia after correction of high-order aberrations
    Ethan A Rossi
    School of Optometry, University of California, Berkeley, CA 94720, USA
    J Vis 7:14. 2007
    ..Optical aberrations do not limit VA in low myopia after AO correction. There is no difference in the high-order aberrations of emmetropes and low myopes. Retinal and/or cortical factors limit VA in low myopes after AO correction...
  21. ncbi request reprint Dynamic visual stimulus presentation in an adaptive optics scanning laser ophthalmoscope
    Siddharth Poonja
    University of California, Berkeley School of Optometry, Berkeley, CA 94720 2020, USA
    J Refract Surg 21:S575-80. 2005
    ....
  22. ncbi request reprint High-resolution imaging with adaptive optics in patients with inherited retinal degeneration
    Jacque L Duncan
    Department of Ophthalmology, University of California, San Francisco School of Medicine, San Francisco, California 94143 0730, USA
    Invest Ophthalmol Vis Sci 48:3283-91. 2007
    ..To investigate macular photoreceptor structure in patients with inherited retinal degeneration using high-resolution images and to correlate the findings with clinical phenotypes and genetic mutations...
  23. ncbi request reprint 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...
  24. ncbi request reprint Applying wavefront sensors and corneal topography to keratoconus
    Jason Marsack
    Biomedical Engineering Dept, University of Texas at Austin, Austin, TX 78712, USA
    Biomed Sci Instrum 38:471-6. 2002
    ..The lenses will be formed from thick, pre-fabricated soft contact lenses using laser ablation. Preliminary ablation of these lenses is demonstrated using a femptosecond Ti: Sapphire (Ti:Al2O3) laser system...
  25. ncbi request reprint High-resolution retinal imaging of cone-rod dystrophy
    Jessica I Wolfing
    Center for Visual Science, University of Rochester, Rochester, New York 14627, USA
    Ophthalmology 113:1019.e1. 2006
    ..To date, adaptive optics ophthalmoscopy has been used mainly to examine the normal retina. Here we use adaptive optics ophthalmoscopy to image cone-rod dystrophy in vivo and compare these results with standard clinical tests...
  26. ncbi request reprint Deconvolution of adaptive optics retinal images
    Julian C Christou
    Center for Adaptive Optics, University of California, Santa Cruz, California 95064, USA
    J Opt Soc Am A Opt Image Sci Vis 21:1393-401. 2004
    ..The results show that the error in classification between the L and M cones is reduced by a factor of 2, thereby reducing the number of images required by a factor of 4...
  27. ncbi request reprint Monochromatic aberrations provide an odd-error cue to focus direction
    Brent J Wilson
    College of Optometry, University of Houston, Texas 77204 2020, USA
    J Opt Soc Am A Opt Image Sci Vis 19:833-9. 2002
    ..It was found that the ability to discriminate PSFs for different directions of defocus varied among individuals but, in general, depended on the magnitude of monochromatic aberrations...
  28. pmc Pulsatility of parafoveal capillary leukocytes
    Joy A Martin
    University of Houston, College of Optometry, Houston, TX 77004 2020, USA
    Exp Eye Res 88:356-60. 2009
    ..By controlling for the variation in leukocyte velocity caused by the cardiac cycle, we can better detect other changes in retinal leukocyte velocity induced by disease or pharmaceutical agents...
  29. ncbi request reprint High-resolution in vivo imaging of the RPE mosaic in eyes with retinal disease
    Austin Roorda
    UC Berkeley School of Optometry, University of California, Berkeley, Berkeley, California 94720 2020, USA
    Invest Ophthalmol Vis Sci 48:2297-303. 2007
    ..To use high-resolution and contrast imaging techniques to reveal microscopic retinal structures, including individual retinal pigment epithelial (RPE) cells, in human eyes with inherited retinal disease...
  30. doi request reprint Intrinsic signals from human cone photoreceptors
    Kate Grieve
    School of Optometry, University of California, Berkeley, CA 94720 2020, USA
    Invest Ophthalmol Vis Sci 49:713-9. 2008
    ..To develop noninvasive means to relate structure to function in human eyes, the authors investigated intrinsic retinal signals at high resolution using an adaptive optics scanning laser ophthalmoscope (AOSLO)...