Results 21 to 30 of about 1,223,328 (289)

Prevalence of different types of intermittent exotropia among exotropic children at Ain Shams University ophthalmology outpatient clinic

open access: yesJournal of the Egyptian Ophthalmological Society, 2021
Introduction Intermittent exotropia ‘X(T)’ is a disorder of binocular eye movement control, in which one eye intermittently moves outward. It is the commonest type of exodeviation and is usually detected by the parents in early childhood. Patients with X(
Rehab A.M Sallam   +3 more
doaj   +1 more source

A review of non-strabismic accommodative-vergence anomalies in school-age children. Part 1: Vergence anomalies

open access: yesAfrican Vision and Eye Health, 2015
Comfortable reading and the performance of near point activities involve efficient accommodative and vergence systems. However, accommodative and vergence anomalies are associated with various symptoms that impair efficient near point tasks.
Samuel O. Wajuihian, Rekha Hansraj
doaj   +1 more source

Binocular Vision Anomalies in Children and Young Adults and Effectiveness of Vision Therapy

open access: yesDelhi Journal of Ophthalmology, 2022
Purpose: To figure out the frequency of binocular vision (BV) anomalies in children and young adults with symptoms like blurring, headache, or eyestrain and evaluate vision therapy’s effectiveness (VT).
Mohammad Mostafa Hossain   +4 more
doaj   +1 more source

Convergence excess accommodative esotropia: a descriptive review of patients presenting over a period of 10 years

open access: yesBritish and Irish Orthoptic Journal, 2011
Aim: Convergence excess accommodative esotropia describes an esotropia on accommodation at near fixation that is controlled to an esophoria/orthophoria at distance fixation with binocular single vision.
Tess Garretty
doaj   +1 more source

Vergence anomalies in a sample of high school students in South Africa

open access: yesJournal of Optometry, 2016
Aim: To study the prevalence of nearpoint vergence anomalies (convergence insufficiency, convergence excess and fusional vergence dysfunction) and association with gender, age groups, grade level and study site (suburban and rural).
Samuel Otabor Wajuihian, Rekha Hansraj
doaj   +1 more source

Rethinking Craig and Gordon's approach to modeling isotopic compositions of marine boundary layer vapor [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
We develop a one-dimensional (1-D) steady-state isotope marine boundary layer (MBL) model that includes meteorologically important features missing in models of the Craig and Gordon type, namely height-dependent diffusion and mixing, lifting to deliver ...
X. Feng   +4 more
doaj   +1 more source

Case Report Convergence Insufficiency/Divergence Insufficiency Convergence Excess/Divergence Excess: Some Facts and Fictions [PDF]

open access: yes, 2020
Great discrepancies are often encountered between the distance fixation and the near-fixation esodeviations and exodeviations. They are all attributed to either anomalies of the AC/A ratio or anomalies of the fusional convergence or divergence amplitudes.
Alaa Boughannam   +4 more
core  

Spasm of the near reflex: A case report

open access: yesAmerican Journal of Ophthalmology Case Reports, 2017
Purpose: Spasm of the near reflex (SNR) is a triad of miosis, excess accommodation and excess convergence. Primary SNR is most often functional in origin We aim to highlight the clinical features which distinguish primary convergence from other ...
Maedbh Rhatigan   +2 more
doaj   +1 more source

Comparison of the clinical variables of convergence-insufficiency-type recurrent exotropia and basic/divergence-excess-type recurrent exotropia.

open access: yes, 2019
Comparison of the clinical variables of convergence-insufficiency-type recurrent exotropia and basic/divergence-excess-type recurrent exotropia.
Joo Yeon Lee (4117393)   +3 more
core   +1 more source

Subterranean mammals show convergent regression in ocular genes and enhancers, along with adaptation to tunneling

open access: yeseLife, 2017
The underground environment imposes unique demands on life that have led subterranean species to evolve specialized traits, many of which evolved convergently.
Raghavendran Partha   +7 more
doaj   +1 more source

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