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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Proceedings ArticleDOI
A schematic eye for virtual environments
TL;DR: This paper presents a schematic eye model, based on a combination of several ophthalmic models, that attempts to very closely approximate a user's optical centers and intraocular separation using as little as a single measurement of pupillary distance (PD).
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A computational observer model of spatial contrast sensitivity: Effects of wavefront-based optics, cone mosaic structure, and inference engine
TL;DR: A computational observer model of the human spatial contrast sensitivity (CSF) function based on the Image Systems EngineeringTools for Biology (ISETBio) simulation framework is presented and it is demonstrated that ISETBio-derived CSFs agree well with CSFs derived using traditional ideal observer approaches, when the mosaic, optics, and inference engine are matched.
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Evaluation of image quality metrics for the prediction of subjective best focus.
TL;DR: It is hypothesize that errors pertaining to the conversion between infrared and visible wavelengths rather than calculation method may be the limiting factor in determining objective best focus from near infrared WA measurements.
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Preparing photographic plates of palynomorphs in the digital age
James B. Riding,Martin J. Head +1 more
TL;DR: The best way to do this for formal publication is to prepare "plates" (montages) of photomicrograpes as discussed by the authors, which can be used to illustrate the specimens they study.
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Accommodation and age-dependent eye model based on in vivo measurements
TL;DR: The proposed eye model is able to predict changes in objective refraction and accommodation response and has the potential to be a useful design and testing tool for devices designed to correct the eye's optical errors.
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.