Contribution of the gradient refractive index and shape to the crystalline lens spherical aberration and astigmatism.
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TLDR
This study is the first systematic experimental study of the relative contribution of geometry and GRIN to the aberrations in a mammal lens.About:
This article is published in Vision Research.The article was published on 2013-06-28 and is currently open access. It has received 36 citations till now. The article focuses on the topics: Lens (optics) & Spherical aberration.read more
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The physiological optics of the lens.
TL;DR: Water transport is emerging as the critical parameter that links the transparency and refractive properties of the lens at the cellular level, and highlights the need to study how age-related changes in water transport result in presbyopia and cataract, the leading causes of refractive error and blindness in the world today.
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The visual and functional impacts of astigmatism and its clinical management.
TL;DR: A comprehensive overview of research examining the impact of astigmatism on clinical and functional measures of vision, the short and longer term adaptations to astigmatisms that occur in the visual system, and the currently available clinical options for the management of patients with patients with Astigmatism can be found in this article.
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Influence of shape and gradient refractive index in the accommodative changes of spherical aberration in nonhuman primate crystalline lenses.
Alberto de Castro,Judith Birkenfeld,Bianca Maceo,Fabrice Manns,Esdras Arrieta,Jean-Marie A. Parel,Susana Marcos +6 more
TL;DR: The reconstructed GRIN lens has more negative spherical aberration and a larger shift toward more negative values with accommodation, compared with the lens with the homogeneous equivalent refractive index.
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Contribution of Shape and Gradient Refractive Index to the Spherical Aberration of Isolated Human Lenses
TL;DR: The constancy of the GRIN axial power exponent, and the opposite slopes of surface and nucleus indices with age, explain the minor variations of the average index.
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OCT-based crystalline lens topography in accommodating eyes.
TL;DR: Custom Spectral Domain Optical Coherence Tomography (SD-OCT) provided with automatic quantification and distortion correction algorithms was used to measure anterior and posterior crystalline lens surface elevation in accommodating eyes and to evaluate relationships between anterior segment surfaces.
References
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Book
Adaptation in natural and artificial systems
TL;DR: Names of founding work in the area of Adaptation and modiication, which aims to mimic biological optimization, and some (Non-GA) branches of AI.
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Power vectors: An application of Fourier analysis to the description and statistical analysis of refractive error
TL;DR: Advantages of this power vector representation of a sphero-cylinder lens for numerical and graphical analysis of optometric data are described for problems involving lens combinations, comparison of different lenses, and the statistical distribution of refractive errors.
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Presbyopia and the optical changes in the human crystalline lens with age
TL;DR: It is shown that there are substantial optical changes in the human lens with increasing age and during accommodation, since both the magnitude and the sign of the spherical aberration change with age and stretching.
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Contribution of the cornea and internal surfaces to the change of ocular aberrations with age
TL;DR: The results suggest that the degradation of the ocular optics with age can be explained largely by the loss of the balance between the aberrations of the corneal and the internal surfaces.
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Compensation of corneal aberrations by the internal optics in the human eye.
TL;DR: The amount of aberration of both the cornea and internal optics was found to be larger than for the complete eye, indicating that the first surface of the corneal topography and the internal ocular optics partially compensate for each other's aberrations and produce an improved retinal image.