Results 201 to 210 of about 102,036 (238)

[Comparison between NPC (near point convergence) and NPA (near point accommodation) in various horizontal vision positions].

Revista brasileira de oftalmologia, 1970
openaire   +1 more source

Tipping points in gut ecology: a hidden resilience deficit in industrialised microbiomes

Ofordile O.
europepmc   +1 more source

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The impact of high- and moderate-intensity exercise on near-point of convergence metrics

Brain Injury, 2021
Background: Near point of convergence (NPC) assesses the vergence ability of the visuo-oculomotor system; however, little is known regarding: the extent and duration exercise impacts NPC and the between- and within-day reliability of NPC metrics.Methods: An accommodative ruler with a miniature Snellen chart was placed upon the philtrum (upper lip ...
Joel Burma, Jonathan D Smirl
exaly   +3 more sources

Postconcussion: Receded Near Point of Convergence is not Diagnostic of Convergence Insufficiency

American Journal of Ophthalmology, 2019
To determine the frequency of occurrence of receded near point of convergence (NPC) in patients with chronic concussion-related symptoms and in those with receded NPC to enumerate the frequency of convergence insufficiency and other oculomotor disorders.Retrospective cross-sectional study.Clinic charts were retrospectively reviewed for the prior 3.5 ...
Aparna Raghuram, David R Howell, Susan Cotter   +2 more
exaly   +3 more sources

A prospective study of different test targets for the near point of convergence

Ophthalmic and Physiological Optics, 2010
Abstract Purpose:  To determine whether different test targets including an accommodative target (AT), a transilluminator (TR), and a transilluminator with a red lens (RL), affect the near point of convergence (NPC) value; and to determine which test target is most sensitive to identify ...
Yi Pang
exaly   +3 more sources

Near Point of Convergence in Iranian Schoolchildren: Normative Values and Associated Factors

Strabismus, 2018
To determine the distribution of near point of convergence (NPC) and its related factors in 6 to 12-year-old children.In a cross-sectional study in 2015, the urban and rural children of Shahroud, north of Iran, were sampled. All rural schoolchildren were invited to the study, and in the urban area, we conducted random cluster sampling.
Fatemeh Hashemi, Payam Nabovati, Emamian Mh   +2 more
exaly   +3 more sources

A History of Concussion Does Not Lead to an Increase in Ocular Near Point of Convergence

International Journal of Sports Medicine, 2018
AbstractOcular near point of convergence (NPC) has been shown to be sensitive to the effects of concussion and subconcussive impacts. To determine if NPC is also sensitive to a previous history of concussion, male contact-sport athletes either with (n=26) or without (n=16) a history of at least one previous concussion had their NPC assessed.
Jonathan D Smirl, Paul van Donkelaar
exaly   +3 more sources

Near Point of Convergence after Concussion in Children

Optometry and Vision Science, 2017
ABSTRACT Purpose To determine the incidence of abnormal near point of convergence (NPC) after acute concussion in pediatric patients and to describe the clinical course of such patients. Methods A retrospective cohort
Eileen P, Storey, Stephen R, Master, Julia E, Lockyer, Olivia E, Podolak, Matthew F, Grady, Christina L, Master   +5 more
openaire   +2 more sources