Results 31 to 40 of about 102,036 (238)

Near Point of Convergence Break for Different Age Groups in Turkish Population with Normal Binocular Vision: Normative Data

open access: yesTürk Oftalmoloji Dergisi, 2013
Purpose: The purpose of this study was to evaluate the near point of convergence break in Turkish population with normal binocular vision and to obtain the normative data for the near point of convergence break in different age groups. Such database has
Nihat Sayın   +5 more
doaj   +1 more source

Effect of target type on near point of convergence in a healthy, active, young adult population

open access: yesJournal of Eye Movement Research, 2015
Purpose: Measuring near point of convergence (NPC) has recently emerged as a concussion assessment tool. Differences in administration of the test can be seen within the literature, which may affect results and normative values.
Jacqueline Phillips, Ryan Tierney
doaj   +1 more source

Effectiveness of vision therapy in school children with symptomatic convergence insufficiency

open access: yesJournal of Ophthalmic & Vision Research, 2017
Purpose: To determine the effectiveness of vision therapy among Korean elementary school children with convergence insufficiency. Methods: A total of 235 elementary schoolchildren, 10.13 ± 2.45 years of age, were subjected to thorough eye examination ...
Jung Un Jang   +3 more
doaj   +1 more source

Near Point of Convergence Deficits and Treatment Following Concussion: A Systematic Review [PDF]

open access: yesJournal of Sport Rehabilitation, 2020
Context:Convergence dysfunction following concussion is common. Near point of convergence (NPC) is a quick and easy assessment that may detect oculomotor dysfunction such as convergence insufficiency (CI), but NPC measurements are rarely reported.
Ashley L, Santo   +2 more
openaire   +2 more sources

Oculomotor response in male collegiate pole vaulters after repeated head impact due to falls from heights: a pilot longitudinal study

open access: yesJournal of Physical Fitness and Sports Medicine, 2021
Subconcussive head impact exposure in sports is a complex public health issue. Although many head impacts are asymptomatic, the near point of convergence (NPC) that measures the closest point of focus before diplopia occurs, has been shown to reflect ...
Taisei Hakozaki   +4 more
doaj   +1 more source

The effect of acute ingestion of alcohol at 0.05% and 0.10% blood respiratory alcohol concentration on heterophoria

open access: yesAfrican Vision and Eye Health, 2016
Introduction: Alcohol ingestion has a significant effect on speech, vision and coordination. The legal limit for driving under the influence in South Africa is 0.05% blood alcohol concentration (BAC), whilst intoxication is considered to occur at 0.10 ...
Alvin J. Munsamy   +6 more
doaj   +1 more source

Changes to Visual Parameters Following Virtual Reality Gameplay

open access: yesBritish and Irish Orthoptic Journal, 2022
Introduction: Virtual reality (VR) gameplay is popular with a range of games and educational resources available. However, it puts high demands on the visual system. Current evidence shows conflicting impacts on visual parameters.
Sanjog Banstola   +2 more
doaj   +1 more source

Convergence of Markov processes near saddle fixed points [PDF]

open access: yesThe Annals of Probability, 2007
We consider sequences $(X_t^N)_{t\geq0}$ of Markov processes in two dimensions whose fluid limit is a stable solution of an ordinary differential equation of the form $\dot{x}_t=b(x_t)$, where $b(x)={\pmatrix{-μ0 0 λ}}x+τ(x)$ for some $λ,μ>0$ and $τ(x)=O(|x|^2)$.
openaire   +3 more sources

Accommodative convergence–accommodation ratio and fusional capacity in patients with constant and intermittent exotropia

open access: yesJournal of Ophthalmology, 2021
Background: It has been reported that exotropia was seen in 16.9-23% of patients with strabismus. Exophoria and exotropia may be caused by congenital or acquired anomalies in orbital structure, ocular structure, or extraocular muscle attachment and/or ...
I. M. Boichuk, Alui Tarak
doaj   +1 more source

Near vision anomalies in Black high school children in Empangeni, South Africa: A pilot study

open access: yesAfrican Vision and Eye Health, 2014
Background: The ability to read efficiently and comfortably is important in the intellectual development and academic performance of a child. Some children experience difficulties when reading due to symptoms related to near vision anomalies.
Sam O. Wajuihian, Rekha Hansraj
doaj   +1 more source

Home - About - Disclaimer - Privacy