Results 1 to 10 of about 340,097 (306)

Visual Acuity

open access: yesOphthalmology Science, 2023
Objective: To examine the data quality and usability of visual acuity (VA) data extracted from an electronic health record (EHR) system during ophthalmology encounters and provide recommendations for consideration of relevant VA end points in ...
Judith E. Goldstein, OD   +3 more
doaj   +1 more source

Comparison of smartphone based peek visual acuity with Snellen Visual Acuity

open access: yesJournal of Applied Pharmaceutical Research, 2023
Purpose: To test an alternative method of visual acuity assessment by comparing habitual and best-corrected visual acuity by Snellen and Peek (a visual acuity testing smartphone application).
Nisha Dulani   +2 more
doaj   +1 more source

Habitual visual acuity and visual acuity threshold demands in Nigerian school classrooms

open access: yesScientific Reports, 2022
This study was designed to estimate the burden of blindness and vision impairment in school children, and to determine the proportion of students meeting the visual acuity (VA) demand for their classrooms. From 148 primary and secondary school classrooms
Onyekachukwu Mary-Anne Amiebenomo   +3 more
doaj   +1 more source

Age-related laryngoscopic visual acuity

open access: yesAfrican Journal of Emergency Medicine, 2021
Background: Endotracheal intubation by direct laryngoscopy is a mainstay of advanced airway management performed both in the prehospital environment and in the Emergency Department.
Abdul-Maajid Mathews   +2 more
doaj   +1 more source

Vertical dynamic visual acuity is significantly lower than horizontal dynamic visual acuity

open access: yesScientific Reports, 2023
Dynamic visual acuity (DVA) is crucial for the perception of moving objects. While traditional DVA assessment tools predominantly focus on horizontal movements, the evaluation of vertical DVA remains unstandardized.
Aoi Tachihara   +5 more
doaj   +1 more source

Habitual visual acuity in a large urban cohort of Western India and factors influencing poor habitual vision

open access: yesIndian Journal of Ophthalmology, 2021
Purpose: The aim of this study was to determine habitual visual acuity (HVA) in a large urban cohort in western India and identify factors associated with poor HVA.
Nishant Kumar   +3 more
doaj   +1 more source

Visual acuity after trabeculectomy [PDF]

open access: yesVojnosanitetski Pregled, 2005
Background/Aim. In this study we compared the two groups of glaucoma patients who had underwent trabeculectomy, with or without intraoperative application of antimetabolite 5-Fluorouracile (5 FU). Methods. We followed up 50 glaucoma patients (group I) in
Buzarovska-Blaževska Karolina   +3 more
doaj   +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   +9 more sources

A comparative study on peek (Smartphone based) Visual acuity test and LogMAR visual acuity test

open access: yesTNOA Journal of Ophthalmic Science and Research, 2023
Context: The use of smartphone-based peek acuity application to test the visual acuity will improve the time efficacy, availability, and utility of subjective results collections for the healthcare providers.
J Anitha   +4 more
doaj   +1 more source

Presaccadic attention sharpens visual acuity

open access: yesScientific Reports, 2023
Visual perception is limited by spatial resolution, the ability to discriminate fine details. Spatial resolution not only declines with eccentricity but also differs for polar angle locations around the visual field, also known as ‘performance fields ...
Yuna Kwak   +2 more
doaj   +1 more source

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