Results 11 to 20 of about 1,565 (206)

The repeatability of accommodative accuracy in childhood unilateral amblyopia. [PDF]

Ophthalmic Physiol Opt
Abstract Purpose Unilateral amblyopia is associated with inaccurate accommodation when viewing monocularly with the amblyopic eye, such as when performing traditional amblyopia therapies. This study investigated the repeatability of the accommodative responses over time to understand the likely pattern of defocus during these therapies.
Huang K, Chen AM, Candy TR.
europepmc   +2 more sources

The QuickSee autorefractor reliably measures the accommodative response in children compared with the Shin-Nippon autorefractor. [PDF]

Ophthalmic Physiol Opt
Abstract Introduction This study evaluated the QuickSee autorefractor for measurement of the accommodative response in a cohort of children without significant ametropia, and compared the findings to those determined using the gold‐standard Shin‐Nippon device. Methods Children aged 5–7 years were recruited.
Fulton JM, Leighton RE, Uwacu TDF, Moore B, Little JA.   +4 more
europepmc   +2 more sources

Accuracy and precision of a sphero-cylindrical over-refraction app for smartphones. [PDF]

Ophthalmic Physiol Opt
Abstract Purpose To evaluate the accuracy and precision of a web‐based smartphone app designed to measure sphero‐cylindrical over‐refraction. Methods A total of 307 healthy young subjects (22.5 ± 3.4 years) underwent clinical subjective refraction. In addition to each subject's refractive correction, spherical and cylindrical errors from −1.50 to 0.00 ...
Salmeron-Campillo RM, Martinez-Ros G, Diaz-Guirado JA, Travel-Alarcon C, Jaskulski M, Lopez-Gil N.   +5 more
europepmc   +2 more sources

P4HA2 Participates in Pathogenesis of Refractive Error by Regulating Collagen Posttranslational Modification and Extracellular Matrix Balance. [PDF]

Hum Mutat
Myopia represents a refractive anomaly characterized by impaired vision resulting from a misfocused image in front of the fovea. Although numerous genes linked to high myopia (HM) have been identified, the exact etiology and pathogenesis mechanisms of HM remain predominantly obscure. In a prior investigation, a mutation in the P4HA2 gene was identified
Liu Y, Dong S, Huang F, Li R, He X, Jiang Y, Tian Q, Xiong H, Jin L, Wang Q, Xia L, Chen J, Wu H, Guo H, Zhou X, Xia K, Hu Z.   +16 more
europepmc   +2 more sources

Sources of reduced visual acuity and spectacle treatment options for individuals with Down syndrome: Review of current literature. [PDF]

Ophthalmic Physiol Opt
Abstract Individuals with Down syndrome are known to have a greater prevalence of ocular conditions such as strabismus, nystagmus, elevated refractive error, poor accommodative function, elevated higher‐order optical aberrations and corneal abnormalities.
Anderson HA.
europepmc   +2 more sources

Using a video‐based eye tracker to analyse the binocular near‐reflex dynamics response

Ophthalmic and Physiological Optics, Volume 43, Issue 6, Page 1540-1549, November 2023., 2023
Abstract Purpose This study presents a novel video‐based eye‐tracking system for analysing the dynamics of the binocular near‐reflex response. The system enables the simultaneous measurement of convergence, divergence and pupillary size during accommodation and disaccommodation to aid the comprehensive understanding of the three‐component near‐reflex ...
Julián Espinosa, Kauzar Archid, Jorge Pérez, Esther Perales   +3 more
wiley   +1 more source

COMPARISON OF CYCLOPLEGIC AND MANIFEST REFRACTION OF CHILDREN AND ADOLESCENTS IN CAMPINAS, BRAZIL

Vision Pan-America, 2017
Purpose: To determinate a relation between the manifest refractive error and the cyclopegic refractive error of children and adolescents in Campinas - SP, Brazil and to compare our results with previous studies.
Marcelo Sobrinho, Livia Biselli, Gabriela Hoehr, Gustavo Neves   +3 more
doaj   +1 more source

Refractive error changes and associated asthenopia observed after COVID-19 infection: Case reports from two continents

Indian Journal of Ophthalmology, 2023
COVID-19 infection has been linked to various ocular complications and complaints, but not to refractive errors. In this case report, we present ethnically diverse patients who reported asthenopic symptoms shortly after recovering from COVID-19 infection.
Monika Thakur, Thanuja Panicker, PremNandhini Satgunam   +2 more
doaj   +1 more source

Functional changes in fusional vergence‐related brain areas and correlation with clinical features in intermittent exotropia using functional magnetic resonance imaging

Human Brain Mapping, Volume 44, Issue 15, Page 5002-5012, 15 October, 2023., 2023
Decreased brain activation in the right frontal eye field, left inferior parietal lobule and cerebellum was found in intermittent exotropia (IXT) children, which may play a role in the pathogenesis of IXT by influencing fusional vergence function. Increased activation in MT+ may compensate for this dysfunction in IXT children.
Weijia Zhang, Nanxi Fei, Yachen Wang, Bingbing Yang, Zhihan Liu, Luyao Cheng, Junfa Li, Junfang Xian, Tao Fu   +8 more
wiley   +1 more source

Study on accommodation by autorefraction and dynamic refraction in children

Journal of Optometry, 2014
Purpose: Childhood accommodation interferes with accurate diagnosis of the latent refractive errors. Dynamic retinoscopy offers accurate measurements of accommodative response, while an autorefractometer can predict the accommodative system activation in
Prabhakar Srinivasapur Krishnacharya
doaj   +1 more source