Results 11 to 20 of about 349,442 (310)

Visual Acuity does not Moderate Effect Sizes of Higher-Level Cognitive Tasks. [PDF]

open access: yes, 2016
Background/study contextDeclining visual capacities in older adults have been posited as a driving force behind adult age differences in higher-order cognitive functions (e.g., the "common cause" hypothesis of Lindenberger & Baltes, 1994, Psychology ...
Allen, Philip A   +3 more
core   +2 more sources

Visual Acuity: Decoded

open access: yesDelhi Journal of Ophthalmology, 2019
In the current scenario of competition, paper writing, critical analysis and stardom, we forget to analyse the basics of the subject, one of which is a visual acuity standard.
Pushkar Dhir   +10 more
doaj   +1 more source

Dysflective cones: Visual function and cone reflectivity in long-term follow-up of acute bilateral foveolitis. [PDF]

open access: yes, 2017
PURPOSE:Confocal adaptive optics scanning laser ophthalmoscope (AOSLO) images provide a sensitive measure of cone structure. However, the relationship between structural findings of diminished cone reflectivity and visual function is unclear.
Cunningham, Emmett T   +9 more
core   +1 more source

Photometric compliance of tablet screens and retro-illuminated acuity charts as visual acuity measurement devices [PDF]

open access: yes, 2016
Mobile technology is increasingly used to measure visual acuity. Standards for chart-based acuity tests specify photometric requirements for luminance, optotype contrast and luminance uniformity.
Bastawrous, A.   +5 more
core   +5 more sources

Visual pathway function and structure in Wolfram syndrome: Patient age, variation and progression [PDF]

open access: yes, 2018
Background/aimsTo report alterations in visual acuity and visual pathway structure over an interval of 1–3 years in a cohort of children, adolescents and young adults who have Wolfram syndrome (WFS) and to describe the range of disease severity evident ...
Al-Lozi, Amal   +6 more
core   +2 more sources

Contribution of sVEP visual acuity testing in comparison with subjective visual acuity

open access: yesBiomedical Papers, 2015
Aims: Visual acuity determination is an important task in ophthalmology and optometry practices. Visual acuity can be examined objectively or subjectively.
Petr Vesely
doaj   +1 more source

Systems and methods for altering visual acuity [PDF]

open access: yes, 2012
Provided are systems operable to effect a temporary change in a modulation transfer function (MTF) of a target imaging system. The systems include a light source operable to produce light for transient propagation onto at least a portion of the target ...
Milner, Thomas E.   +3 more
core   +1 more source

The Impact of Cataract Surgery on Contrast Visual Acuity and Retinal Sensitivity in Patients with Retinitis Pigmentosa

open access: yesJournal of Ophthalmology, 2021
Purpose. To determine the effects of cataract surgery on contrast visual acuity and retinal sensitivity in patients with retinitis pigmentosa. Methods. Retinal sensitivity and contrast visual acuity were determined by microperimetry (MAIA) and contrast ...
Gen Miura   +4 more
doaj   +1 more source

Comparison of smartphone application-based visual acuity with traditional visual acuity chart for use in tele-ophthalmology

open access: yesTaiwan Journal of Ophthalmology, 2022
PURPOSE: The aim of this study was to compare the visual acuity (VA) by smartphone-based applications – EyeChart and the Peek Acuity to the standard Snellen chart to explore the possibility of using them as an alternative in tele-ophthalmology in the ...
Aparna Bhaskaran   +4 more
doaj   +1 more source

Transthyretin levels in the vitreous correlate with change in visual acuity after vitrectomy [PDF]

open access: yes, 2009
Background/aim: Little is known about biochemical markers related to change in visual acuity after vitrectomy. The potential use of transthyretin (TTR), a carrier of the retinol/retinol-binding protein, as a biochemical marker protein, was investigated ...
De Letter, Els   +7 more
core   +3 more sources

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