Journal ArticleDOI
The chromatic eye: a new reduced-eye model of ocular chromatic aberration in humans
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TLDR
The reduced eye was further modified by changing the refracting surface to an aspherical shape to reduce the amount of spherical aberration, providing an improved account of both the longitudinal and transverse forms of ocular chromatic aberration.Abstract:
New measurements of the chromatic difference of focus of the human eye were obtained with a two-color, vernier-alignment technique. The results were used to redefine the variation of refractive index of the reduced eye over the visible spectrum. The reduced eye was further modified by changing the refracting surface to an aspherical shape to reduce the amount of spherical aberration. The resulting chromatic-eye model provides an improved account of both the longitudinal and transverse forms of ocular chromatic aberration.read more
Citations
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Visual acuity and X-linked color blindness
TL;DR: Multi-gene dichromats, who possess more than one photopigment gene in the array, all of which encode for the same long- or middle-wavelength sensitive photopigsment, have significantly higher visual acuity than either normal trichromats or dichromat who have only a single-g Gene.
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OpenEyeSim: A biomechanical model for simulation of closed-loop visual perception.
TL;DR: The main purpose of OpenEyeSim is to serve as a platform for developing models of the joint learning of visual representations and eye-movement control in the perception-action cycle, and it is shown that the model can reproduce different types of eye movements.
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The oblique effect has an optical component: orientation-specific contrast thresholds after correction of high-order aberrations.
TL;DR: The experiments confirm that the optics of the eye introduce rotational asymmetry to the luminance distribution on the retina and that this impacts vision, inducing orientational anisotropy, and suggest that the traditional view of meridional an isotropy having an entirely neural origin may be true for diffraction-limited pupils but that viewing through larger pupils introduces an additional orientation-specific optical component to this phenomenon.
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Invited Review Schematic eyes: history, description and applications
TL;DR: A schematic eye is a mathematical or physical model that represents the basic optical features of the real eye as mentioned in this paper, it is a simplified version of the human eye and there is a range of schematic eyes that
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Interaction of aberrations, diffraction, and quantal fluctuations determine the impact of pupil size on visual quality
TL;DR: The visual Strehl ratio derived from the optical transfer function was able to capture the combined impact of optics and quantal noise on visual quality and tested the model's predictions for five cycles per degree gratings by measuring contrast sensitivity.
References
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Journal ArticleDOI
The Frequency Response of a Defocused Optical System
TL;DR: In this paper, the response of a defocused aberration-free optical system to line-frequencies in the object is studied analytically, and curves are given showing the response as a function of line-frequency for a range of values of defect of focus.
Journal ArticleDOI
Saccadic eye movements towards stimuli triggered by prior saccades.
P.E. Hallett,A.D. Lightstone +1 more
TL;DR: The only finding reminiscent of perceptual “saccadic suppression” and mislocation effects is that a target which steps to a position ahead of a saccade is sometimes ignored.
Journal ArticleDOI
Theory and measurement of ocular chromatic aberration.
TL;DR: One implication of these results is that, although the eye has substantial chromatic aberration, the pupil is positioned so as to minimize the transverse component of the aberration for central vision, thereby optimizing foveal image quality for polychromatic objects.
Journal ArticleDOI
The change in refractive power of the human eye in dim and bright light.
George Wald,Donald R. Griffin +1 more
TL;DR: It is concluded that setting optical instruments about 0.4 diopter more negatively in dim than in bright light is justified on the basis of the chromatic aberration of the eye.