Results 41 to 50 of about 42,651 (303)

Comparison of the amplitude of accommodation determined subjectively and objectively in South African university students

open access: yesAfrican Vision and Eye Health, 2018
Background: Historically, two clinical methods have been used for measuring the amplitude of accommodation, which are the push-up and minus lens methods.
Solani D. Mathebula   +3 more
doaj   +1 more source

Clinical application of accommodating intraocular lens [PDF]

open access: yesInternational Journal of Ophthalmology, 2018
The present review describes recent advances in application of accommodating intraocular lenses (AIOLs). Standard monofocal intraocular lenses (MIOLs) only correct distance vision, while AIOLs are designed to allow both good distance vision and near ...
You-Ling Liang, Song-Bai Jia
doaj   +1 more source

Visual discomfort and blur [PDF]

open access: yes, 2013
Certain visual stimuli, such as striped patterns and filtered noise, have been reported to be uncomfortable. Some filtered noise patterns judged as uncomfortable are those with a relative decrease in contrast amplitude at high spatial frequencies ...
Hibbard, PB, O'Hare, L
core   +2 more sources

Changes in Lens Thickness and Amplitude of Accommodation with Age [PDF]

open access: yesInternational Journal of Anatomy Radiology and Surgery, 2020
Introduction: The human crystalline lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina and, by changing shape, it adjusts focal distance and this function of the lens is
Farah Maqsood, Wafa Abdullah Alyahya
doaj   +1 more source

Random Changes of Accommodation Stimuli: An Automated Extension of the Flippers Accommodative Facility Test [PDF]

open access: yes, 2018
Postprint (author's final ...
Aldaba Arévalo, Mikel   +5 more
core   +2 more sources

Analysis of the calculation of the amplitude of accommodation [PDF]

open access: yes, 2016
The push-up method is routinely used to measure the amplitude of accommodation. In this method the diopter value corresponding to the nearest point that the eye can focus is determined, wearing his neutralizing lens, but not the value of the maximum ...
Camps, Vicente J.   +3 more
core   +2 more sources

Investigation of amplitude of accommodation among Ghanaian school children [PDF]

open access: yesClinical and Experimental Optometry, 2012
Deficient amplitude of accommodation is the most frequently used criteria in an optometric practice in diagnosing whether a patient has accommodative insufficiency. This deficiency is determined based on an age-related expected finding calculated using Hofstetter's equation derived from Donder's and Duane's data.
Godwin O, Ovenseri-Ogbomo   +3 more
openaire   +5 more sources

Visual acuity, amplitude of accommodation and near point of convergence and academic achievement in primary school learners in Bloemfontein

open access: yesAfrican Vision and Eye Health, 2014
Introduction: Learning problems influencing the social and psychological development of children may result from poor visual acuity (VA), insufficient amplitude of accommodation and receded near point of convergence (NPC). This study assessed Grade 4 and
Mariette Nel   +5 more
doaj   +1 more source

Does the Badal optometer stimulate accommodation accurately? [PDF]

open access: yes, 2016
Postprint (author's final ...
Aldaba Arévalo, Mikel   +3 more
core   +2 more sources

Optical factors influencing the amplitude of accommodation

open access: yesVision Research, 2017
The purpose of this work was to find plausible predictors among optical parameters that may explain the inter-individual differences in subjective amplitude of accommodation not explained by age. An exploratory multivariable regression analysis was carried out retrospectively on a dataset with 180 eyes from 97 subjects (ages ranged from 20 to 58years).
Diego López-Alcón   +3 more
openaire   +2 more sources

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