Results 11 to 20 of about 807,286 (280)

Association of Football Subconcussive Head Impacts With Ocular Near Point of Convergence [PDF]

JAMA Ophthalmology, 2016
An increased understanding of the relationship between subconcussive head impacts and near point of convergence (NPC) ocular-motor function may be useful in delineating traumatic brain injury.To investigate whether repetitive subconcussive head impacts during preseason football practice cause changes in NPC.This prospective, observational study of 29 ...
Keisuke Kawata, Leah H. Rubin, Jong Hyun Lee, Thomas Sim, Masahiro Takahagi, Victor Szwanki, Al Bellamy, Kurosh Darvish, Soroush Assari, Jeffrey Henderer, Ryan Tierney, Dianne Langford   +11 more
exaly   +5 more sources

Characteristics of saccades during the near point of convergence test

Vision Research, 2021
The near point of convergence test is widely used to evaluate binocular vision. It assesses the ability of the eyes to converge at short distances. Although the test consists of a pure symmetrical vergence task, small involuntary saccades occur concurrently.
Clara Mestre, Harold E. Bedell, Fernando Díaz-Doutón, Jaume Pujol, Josselin Gautier   +4 more
exaly   +7 more sources

Determining Near Point of Convergence: Exploring a Component of the Vestibular/Ocular Motor Screen Comparing Varied Target Sizes [PDF]

International Journal of Sports Physical Therapy, 2021
# Background Near point of convergence (NPC), a component of the Vestibular Ocular Motor Screening (VOMS) assessment, may be helpful in diagnosing concussion. The VOMS uses a standardized approach to measure NPC; however, methods of screening for NPC are
John D Heick, Curt Bay
doaj   +4 more sources

The distribution of near point of convergence in an Iranian rural population: A population-based cross-sectional study. [PDF]

Saudi J Ophthalmol, 2019
Hashemi H, Pakzad R, Yekta A, Asharlous A, Aghamirsalim M, Ostadimoghaddam H, Valadkhan M, Khabazkhoob M.   +7 more
europepmc   +4 more sources

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

Journal 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, Melissa L. Race, Elizabeth F. Teel   +2 more
openalex   +3 more sources

RAF near point rule for near point of convergence—a short review

Annals of Eye Science, 2017
RAF near point rule (RNPR) is a routinely used instrument in ophthalmology and optometry practice as well as for research purposes to measure the near point of convergence (NPC). The measurement of NPC is an important criterion for diagnosis and management of convergence insufficiency. The RNPR forms an important tool for ophthalmic clinicians however,
Indra Prasad Sharma
openalex   +2 more sources

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

Journal 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   +3 more sources

Local near-quadratic convergence of Riemannian interior point methods [PDF]

We consider Riemannian optimization problems with inequality and equality constraints and analyze a class of Riemannian interior point methods for solving them. The algorithm of interest consists of outer and inner iterations. We show that, under standard assumptions, the algorithm achieves local superlinear convergence by solving a linear system at ...
Mitsuaki Obara, Takayuki Okuno, Akiko Takeda   +2 more
  +6 more sources

Near Points of Convergence and Accommodation in a Population of University Students in Iran

Journal of Ophthalmic & Vision Research, 2019
Purpose: To determine the distribution of the near point of convergence (NPC) and near point of accommodation (NPA) in a young student population in Iran. Methods: The subjects were selected using a cluster sampling method.
Hassan Hashemi, Mojgan Pakbin, Babak Ali, Abbasali Yekta, Hadi Ostadimoghaddam, Amir Asharlous, Mohammadreza Aghamirsalim, Mehdi Khabazkhoob   +7 more
doaj   +4 more sources

Comparison of Near Point of Accommodation and Near Point of Convergence with Positive Fusional Vergence among Young Adults, Bengaluru [PDF]

International Journal For Multidisciplinary Research
Background: When encountered with mass screening and increased walk-in patients in outpatient departments (OPD), evaluating complete binocular vision assessment becomes time-consuming. Consequently, there is a need to streamline the testing process. This study also aims to explore if there are any correlations between Near Point of Accommodation (NPA ...
Nikhita Jacob, Diwakar Rao -, P S Sasmitha Peththanayake -, D - Nagapriya   +3 more
openalex   +2 more sources