Results 271 to 280 of about 26,550 (306)
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Changes in ocular dimensions and refraction with accommodation
Ophthalmic and Physiological Optics, 1997The purpose of this study was to measure the changes in ocular dimensions with accommodation, with particular reference to the radius of curvature of the posterior surface of the crystalline lens. The increase in power of the eye with accommodation is considered to arise primarily from a decrease in the radius of curvature of the anterior surface of ...
L F, Garner, M K, Yap
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Volume change of the ocular lens during accommodation
American Journal of Physiology-Cell Physiology, 2007During accommodation, mammalian lenses change shape from a rounder configuration (near focusing) to a flatter one (distance focusing). Thus the lens must have the capacity to change its volume, capsular surface area, or both. Because lens topology is similar to a torus, we developed an approach that allows volume determination from the lens cross ...
R, Gerometta +3 more
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Autonomic correlates of ocular accommodation and cardiovascular function
Ophthalmic and Physiological Optics, 2009AbstractPurpose: To evaluate the hypothesis that objective measures of open‐ and closed‐loop ocular accommodation are related to systemic cardiovascular function, and ipso facto autonomic nervous system activity.Methods: Sixty subjects (29 male; 31 female) varying in age from 18 to 33 years (average: 20.3 ± 2.9 years) with a range of refractive ...
Leon N, Davies +2 more
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A Biometric Study of Ocular Changes During Accommodation
American Journal of Ophthalmology, 1993We performed a biometric study that used A-mode ultrasonography on 106 subjects during ocular accommodation. The subjects were divided into two groups; group 1 included 76 subjects and group 2 included 30 subjects. In group 1, we measured the anterior chamber depth, lens thickness, and axial length in the right eye while the left eye, wearing ...
P J, Shum, L S, Ko, C L, Ng, S L, Lin
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Vestibular-ocular accommodation reflex in man.
Aviation, space, and environmental medicine, 1976Stimulation of the vestibular system by angular acceleration produces widespread sensory and motor effects. The present study was designed to study a motor effect which has not been reported in the literature, i.e., the influence of rotary acceleration of the body on ocular accommodation.
B R, Clark, R J, Randle, J D, Stewart
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Nanomedicine for the Detection and Treatment of Ocular Bacterial Infections
Advanced Materials, 2023Zhongxing Chen, Wei Tao, Jinhai Huang
exaly
Cyclodextrin-based ocular drug delivery systems: A comprehensive review
Coordination Chemistry Reviews, 2023Bo Tang
exaly