Results 11 to 20 of about 42,485 (232)

Sources of error in clinical measurement of the amplitude of accommodation. [PDF]

open access: yesJ Optom, 2020
Measurement of the amplitude of accommodation is established as a procedure in a routine optometric eye examination. However, clinical methods of measurement of this basic optical function have several sources of error. They are numerous and diverse, and
Burns DH, Allen PM, Edgar DF, Evans BJW.
europepmc   +4 more sources

Effect of caffeine on the amplitude of accommodation and pupil size

open access: yesBLDE University Journal of Health Sciences, 2023
PURPOSE: It is a well-known fact that caffeine is an autonomic stimulant, which is said to have a significant effect on visual performance. This study was planned to investigate the effect of caffeine on the amplitude of accommodation and pupil size in ...
Vaibhavi V Naik, Mahima Chandra
doaj   +1 more source

An overlooked effect of systemic anticholinergics: alteration on accommodation amplitude [PDF]

open access: yesInternational Journal of Ophthalmology, 2016
AIM: To investigate the effect of oral solifenacin succinate, tolterodine-L-tartarate and oxybutinin hydrochloride (HCl) on accommodation amplitude. METHODS: Female overactive bladder syndrome (OAB) patients who were planned to use oral anticholinergics,
Mehmet Ali Sekeroglu   +4 more
doaj   +1 more source

Mechanism of accommodation: A review of theoretical propositions

open access: yesAfrican 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
doaj   +1 more source

New methodology to measure the dynamics of ocular wave front aberrations during small amplitude changes of accommodation [PDF]

open access: yes, 2007
We present a methodology to measure the systematic changes of aberrations induced by small changes in amplitude of accommodation. We use a method similar the one used in electrophysiology, where a periodic stimulus is presented to the eye and many ...
Arden, G.   +3 more
core   +1 more source

Accommodation Response Variations in University Students under High Demand for Near-Vision Activity

open access: yesLife, 2022
The objective of this study was to investigate accommodation changes and visual discomfort in a university student population after a period of high demand for near-vision activity.
Concepción De-Hita-Cantalejo   +4 more
doaj   +1 more source

Effect of lighting on amplitude of accommodation among adolescence smartphone users [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2021
Inappropriate lighting level causes digital eye strain among smartphone users. This experimental study employed 33 students aged 12-15 years in 3 lower secondary schools in Pathumthani province, Thailand. Amplitude of accommodation (AA) was measured by
Sasitorn Taptagaporn   +4 more
doaj   +1 more source

Amplitude, Latency, and Peak Velocity in Accommodation and Disaccommodation Dynamics. [PDF]

open access: yes, 2017
The aim of this work was to ascertain whether there are differences in amplitude, latency, and peak velocity of accommodation and disaccommodation responses when different analysis strategies are used to compute them, such as fitting different functions ...
Del Águila-Carrasco, AJ   +4 more
core   +4 more sources

Objective Amplitude of Accommodation Computed from Optical Quality Metrics Applied to Wavefront Outcomes

open access: yesJournal 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
doaj   +1 more source

Influence of the accommodation coefficient on nonlinear bubble oscillations [PDF]

open access: yes, 2010
This paper numerically investigates the effect of mass transfer processes on spherical single bubble dynamics using the Hertz–Langmuir–Knudsen approximation for the mass flux across the interface.
Dopazo, Cesar   +2 more
core   +1 more source

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