Research Topics
| CLIFTON SCHORSummaryAffiliation: University of California Country: USA Publications
Research Grants
| Collaborators
|
Detail Information
Publications
Adaptive control of vergence in humansClifton M Schor
University of California at Berkeley, School of Optometry, Berkeley, California 94720, USA
Ann N Y Acad Sci 956:297-305. 2002..Passive orbital mechanics simplify the neural control for precise vertical vergence and cyclovergence that are needed to achieve binocular alignment under open-loop conditions in response to perceived spatial location...- Charles F. Prentice award lecture 2008: surgical correction of presbyopia with intraocular lenses designed to accommodateClifton M Schor
School of Optometry, University of California, Berkeley, Berkeley, California 94720 2020, USA
Optom Vis Sci 86:E1028-41. 2009..Other design issues for A-IOLs include stability of optical properties, aberrations and image quality, and interactions of restored accommodation with binocular eye alignment (the near response)... - Neuromuscular plasticity and rehabilitation of the ocular near responseClifton M Schor
School of Optometry, University of California, Berkeley, CA 94720 2020, USA
Optom Vis Sci 86:E788-802. 2009..The adaptable near-response couplings form the basis of an area of orthoptics that optimizes visual performance by facilitating our natural ability to calibrate neural pathways underlying binocular postural reflexes... - How does saccade adaptation affect visual perception?Teresa D Hernandez
Vision Science Group, School of Optometry, University of California, Berkeley, CA, USA
J Vis 8:3.1-16. 2008..Changes in perceived direction resulting from saccade adaptation are mainly influenced by extra-retinal factors with a small retinal component in the lengthening condition... - The extended horopter: quantifying retinal correspondence across changes of 3D eye positionKai M Schreiber
School of Optometry, University of California, Berkeley, CA, USA
J Vis 6:64-74. 2006.... - Dynamic performance of accommodating intraocular lenses in a negative feedback control system: a simulation-based studyClifton M Schor
Vision Science Group, School of Optometry, University of California at Berkeley, Berkeley, CA 94720 2020, USA
Comput Biol Med 37:1020-35. 2007..Simulations indicate that neural control must be recalibrated to avoid unstable dynamic accommodation with A-IOLs. An interactive web-model of A-IOL illustrating these properties is available at http://schorlab.berkeley.edu... - The coordination of binocular eye movements: vertical and torsional alignmentJames S Maxwell
University of California, 360 Minor Hall, Berkeley, CA 94720 2020, USA
Vision Res 46:3537-48. 2006.... - A virtual ophthalmotrope illustrating oculomotor coordinate systems and retinal projection geometryKai M Schreiber
School of Optometry, UC Berkeley, Berkeley, CA, USA
J Vis 7:4.1-14. 2007..The virtual ophthalmotrope shows the influence of these oculomotor patterns on retinal projection geometry... - Adaptive calibration of dynamic accommodation--implications for accommodating intraocular lensesClifton M Schor
School of Optometry and Vision Science, University of California at Berkeley, Berkeley, CA 94720, USA
J Refract Surg 24:984-90. 2008..Using human experiments, we also investigated whether the accommodative system has the capacity for adaptive recalibration in response to changes in lens biomechanics... - The first and second order dynamics of accommodative convergence and disparity convergenceJames Maxwell
University of California at Berkeley, 360 Minor Hall, Berkeley, CA 94720, United States
Vision Res 50:1728-39. 2010.... - Pulse-step models of control strategies for dynamic ocular accommodation and disaccommodationClifton M Schor
School of Optometry, University of California at Berkeley, Berkeley, CA 94720, USA
Vision Res 46:242-58. 2006..Mismatched amplitudes of phasic-velocity and tonic-position signals in disaccommodation produce unstable step responses... - A pulse-step model of accommodation dynamics in the aging eyeClifton M Schor
School of Optometry, University of California at Berkeley, Vision Science Group, 512 Minor Hall, Berkeley, CA 94720 2020, USA
Vision Res 45:1237-54. 2005..The model illustrates a neural control strategy that is similar to the classical neural control model of step changes by the saccadic and vergence systems... - Symmetrical horizontal vergence contributes to the asymmetrical pursuit of targets in depthJames S Maxwell
University of California, 360 Minor Hall, Berkeley, CA 94720 2020, USA
Vision Res 44:3015-24. 2004.... - Eye movements facilitate stereo-slant discrimination when horizontal disparity is noisyEllen M Berends
Vision Science Group, School of Optometry, University of California, Berkeley, CA, USA
J Vis 3:780-94. 2003..Both methods elevated slant-discrimination thresholds when horizontal disparity noise was present, suggesting that vertical disparity is used as a cue for azimuth... - Comparison of the time courses of concomitant and nonconcomitant vertical phoria adaptationErich W Graf
Vision Science Group, Department of Optometry, University of California-Berkeley, 360 Minor Hall, School of Optometry, Berkeley, CA 94720-2020, USA
Vision Res 43:567-76. 2003..The results support the notion that concomitant and nonconcomitant phoria adaptation involve different mechanisms but not the contention that adaptation to prisms is easier or more robust than adaptation to lenses... - Thresholds for stereo-slant discrimination between spatially separated targets are influenced mainly by visual and memory factors but not oculomotor instabilityZhi Lei Zhang
Vision Science Group, School of Optometry, University of California, Berkeley, CA, USA
J Vis 3:710-24. 2003..Thus, oculomotor error increases with target separation, and it is an important factor in stereo-depth discrimination... - Variation of binocular-vertical fusion amplitude with convergenceShrikant R Bharadwaj
School of Optometry, University of California at Berkeley, Berkeley, CA, USA
Invest Ophthalmol Vis Sci 48:1592-600. 2007..VFA at several convergence angles was measured to obtain a quantitative description of the changes in VFA with convergence... - The influence of first near-spectacle reading correction on accommodation and its interaction with convergenceIndu Vedamurthy
School of Optometry, University of California at Berkeley, Berkeley, California 94720, USA
Invest Ophthalmol Vis Sci 50:4215-22. 2009.... - The surface of the empirical horopterKai M Schreiber
School of Optometry, University of California at Berkeley, CA, USA
J Vis 8:7.1-20. 2008.... - Adaptation to the induced effect stimulus normalizes surface slant perception and recalibrates eye position signals for azimuthBaoxia Liu
Vision Science Group, School of Optometry, University of California, Berkeley, CA 94720, USA
J Vis 5:808-22. 2005.... - Initial destination of the disaccommodation step responseShrikant R Bharadwaj
School of Optometry, University of California at Berkeley, 94720, USA
Vision Res 46:1959-72. 2006..These observations suggest that cycloplegic refractive state is a good behavioral correlate of initial destination of disaccommodation step responses... - Cross-coupling between accommodation and convergence is optimized for a broad range of directions and distances of gazeDorothy Nguyen
University of California, School of Optometry, 512 Minor Hall, Berkeley, CA 94720 2020, USA
Vision Res 48:893-903. 2008..These changes are in directions that compensate for stimulus mismatches caused by spatial-viewing geometry during asymmetric convergence... - Perisaccadic stereo depth with zero retinal disparityZhi Lei Zhang
School of Optometry, University of California at Berkeley, Berkeley, CA 94720 2020, USA
Curr Biol 20:1176-81. 2010..This is the first demonstration that a coding scheme other than retinal disparity has a role in human stereopsis... - Temporal aspects of spatial interactions affecting stereo-matching solutionsZhi-Lei Zhang
Program in Vision Science, University of California at Berkeley, Berkeley, CA 94720-2020, USA
Vision Res 44:3183-92. 2004..Likelihood of MRD decreased as ISI increased (48.9 ms time constant) and increased as contrast was reduced for short ISIs, suggesting that monocular persistence (temporal impulse response) underlies the temporal interaction... - Acceleration characteristics of human ocular accommodationShrikant R Bharadwaj
Vision Science Group, School of Optometry, University of California at Berkeley, 512 Minor Hall, Berkeley, CA 94720-2020, USA
Vision Res 45:17-28. 2005.... - Illusory contrast-induced shifts in binocular visual direction bias saccadic eye movements toward the perceived target positionJulia A Weiler
School of Optometry, University of California, Berkeley, CA 94720 2020, USA
J Vis 7:3.1-18. 2007..The oculomotor system, however, was close to following linear summation... - Effects of partial occlusion on perceived slant differenceBaoxia Liu
Vision Science Group, School of Optometry, University of California, Berkeley, CA 94720, USA
J Vis 5:969-82. 2005..The effect of the occluder on perceived slant differences could have resulted from either a reduction of slant contrast or an increase of slant assimilation... - Dynamic control of ocular disaccommodation: first and second-order dynamicsShrikant R Bharadwaj
School of Optometry, University of California at Berkeley, CA 94720, USA
Vision Res 46:1019-37. 2006..Large discrepancies between the primary destination and desired final position appear to produce overshoots and oscillations of small responses from proximal starting positions... - Effects of luminance and saccadic suppression on perisaccadic spatial distortionsZhi Lei Zhang
Vision Science Group, School of Optometry, University of California, Berkeley, CA 94720, USA
J Vis 8:22.1-18. 2008..To explain these effects, we propose that stimulus-dependent nonlinearities (contrast gain control and saccadic suppression) influence the duration of the temporal impulse response of both single- and double-flashed stimuli... - Changes in cyclotorsion and vertical eye alignment during prolonged monocular occlusionErich W Graf
Vision Science Group, Department of Optometry, University of California-Berkeley, 360 Minor Hall, Berkeley, CA 94720-2020, USA
Vision Res 42:1185-94. 2002..Simulations with Orbit(TM) suggest that these non-concomitant changes in vertical phoria with a concomitant excyclophoria may be based upon orbital mechanics. Excyclophoria appears to be the baseline state of binocular alignment... - Stereo-slant adaptation is high level and does not involve disparity codingEllen M Berends
Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
J Vis 5:71-80. 2005..These results suggest that two types of adaptation occurred, namely adaptation on a mapping/perception level and adaptation contingent on distance...
Research Grants
- Sensory-Motor Control of the Binocular Near ResponseCLIFTON SCHOR; Fiscal Year: 2009..In addition, models developed from the experiments can facilitate the successful design and implementation of new treatments, such as accommodating intra-ocular lenses, designed to offset presbyopia. ..
- DISPARITY PROCESSING IN SENSORY AND MOTOR VISUAL SYSTEMSCLIFTON SCHOR; Fiscal Year: 2001..In addition, the results may provide insight into how unilateral defocus associated with an anisometropia initiates interocular inhibitory processes that could potential disrupt binocular vision. ..
- VISUAL DEVELOPMENT OF SENSORY AND MOTOR FUNCTIONSCLIFTON SCHOR; Fiscal Year: 2003..These experiments should provide a wealth of information on the normal coordination of 3-dimensional eye movements and provide a basis for clinical research in this area. ..
- Sensory-Motor Control of the Binocular Near ResponseClifton M Schor; Fiscal Year: 2010..In addition, models developed from the experiments can facilitate the successful design and implementation of new treatments, such as accommodating intra-ocular lenses, designed to offset presbyopia. ..
- Sensory-Motor Control of the Binocular Near ResponseCLIFTON SCHOR; Fiscal Year: 2009..Project Description Page 6 ..
- VISUAL DEVELOPMENT OF SENSORY AND MOTOR FUNCTIONSCLIFTON SCHOR; Fiscal Year: 2007..The results of these experiments should provide definitive answers to several longstanding questions concerning the coordination of binocular control. ..
- Disparity Processing in Sensory and Motor FunctionsCLIFTON SCHOR; Fiscal Year: 2005..This noise reduction should expand the spatial range of high-resolution stereo-slant perception. ..
- DISPARITY PROCESSING IN SENSORY AND MOTOR VISUAL SYSTEMSCLIFTON SCHOR; Fiscal Year: 1993....
- VISUAL DEVELOPMENT OF SENSORY AND MOTOR FUNCTIONCLIFTON SCHOR; Fiscal Year: 1999....
- VISUAL DEVELOPMENT OF SENSORY AND MOTOR FUNCTIONSCLIFTON SCHOR; Fiscal Year: 1993..The results will identify motor and sensory processes which underlie the spread of concomitance in ocular paresis and the maintenance of yoked versional eye movements during postnatal development...