Results 11 to 20 of about 12,483 (262)
On voluntary ocular accommodation [PDF]
Perception & Psychophysics, 1975 Young observers were challenged to induce a marked monocular accommodative response to a relatively weak accommodative stimulus by placing a-9 diopter contact lens on the eye. At first, observers could not produce the desired response, but with training, three of four subjects achieved criterion.
Robert R. Provine, Jay M. Enoch
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A covered eye fails to follow an object moving in depth
Scientific Reports, 2021 To clearly view approaching objects, the eyes rotate inward (vergence), and the intraocular lenses focus (accommodation). Current ocular control models assume both eyes are driven by unitary vergence and unitary accommodation commands that causally ...
Arvind Chandna +4 more
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Crystalline lens imaging during accommodation with a slit-scanning tomography system: preliminary results [PDF]
EPJ Web of Conferences, 2020 A slit-scanning tomography system previously developed in the Centre of Physics of University of Minho allows to capture images of the eye and posteriorly calculus of the biometric (thickness and curvature) and optical (wavefront aberrations) properties ...
Gomes Jessica, Franco Sandra
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A geometric model of ocular accommodation
Vision Research, 2010 An exoteric geometric mechanics model of ocular accommodation is detailed to elucidate the main ideas of various ongoing modeling efforts. The present study derives solutions for the stretched state of the ocular lens as it might appear during accommodation by using simple geometric arguments and a volume constraint, rather than the more mathematically
Reilly, Matthew A., Ravi, Nathan
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Mechanism of accommodation: A review of theoretical propositions
African Vision and Eye Health, 2015 Accommodation is the process by which the human eye changes its focus to see objects at varying distances from the eye. For nearly 300 years, scientists have investigated and presented various views on the mechanism of accommodation.
Godwin O. Ovenseri-Ogbomo +1 more
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Evaluation of ocular accommodation, convergence and fusional vergence changes during Ramadan [PDF]
Journal of Fasting and Health, 2013 Purpose: There are a few researches regarding the effects of Islamic fasting on visual system. The aim of this study was to investigate the effects of Ramadan fasting on the amplitude of accommodation (AA), near point of convergence (NPC), positive and ...
Seyed Hosein Hoseini-Yazdi +3 more
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Journal of Optometry, 2009 Purpose: We studied the accuracy and precision of 32 objective wavefront methods for finding the amplitude of accommodation obtained in 180 eyes. Methods: Ocular accommodation was stimulated with 0.5 D steps in target vergence spanning the full range of ...
Norberto López-Gil +3 more
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Vision, 2019 The key determinants of the range of clear focus in pre-presbyopes and their relative contributions to the difference between subjective range of focus and objective accommodation assessments have not been previously quantified.
Sandeep K. Dhallu +7 more
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Can we always rely on Borish delayed test for latent hypermetropia?
Indian Journal of Ophthalmology. Case Reports, 2023 The term hyperopia refers to a refractive condition of the eye where parallel light rays from infinity focus behind the neurosensory retina, after refraction through the ocular media when accommodation is at rest.
Devanshi M Dalal, Shivani Mishra
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Effect of Illumination on Ocular Status Modifications Induced by Short-Term 3D TV Viewing
Neural Plasticity, 2017 Objectives. This study aimed to compare changes in ocular status after 3D TV viewing under three modes of illumination and thereby identify optimal illumination for 3D TV viewing. Methods.
Yuanyuan Chen +5 more
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