Results 1 to 10 of about 2,920,595 (142)

Testing Accommodation: The Case for Nott Dynamic Retinoscopy in Orthoptic Assessments [PDF]

British and Irish Orthoptic Journal
Introduction: Accommodation is most commonly assessed using the RAF Rule. However, this subjective test has multiple sources of error, and an objective measurement of accommodation using Nott dynamic retinoscopy may be a more appropriate test to use ...
Sonia Toor, Jessica E. Francis
doaj   +3 more sources

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

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

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

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

Does methylphenidate treatment affect functional and structural ocular parameters in patients with attention deficit hyperactivity disorder? - A prospective, one year follow-up study

Indian Journal of Ophthalmology, 2022
Purpose: Methylphenidate hydrochloride, which blocks the reuptake mechanisms of dopamine and norepinephrine, is used in attention deficit hyperactivity disorder (ADHD) treatment. Methylphenidate has many general side effects including ocular findings. In
Pınar Bingöl-Kızıltunç, Esra Yürümez, Huban Atilla   +2 more
doaj   +1 more source

Clinical Effectiveness of Facility and Accuracy of Accommodation in Diagnosis of Non Strabismic Binocular Vision Anomalies in Young Adults: A Prospective Cross-sectional Observational Study [PDF]

Journal of Clinical and Diagnostic Research, 2022
Introduction: Orthoptic evaluation is highly recommended in children and young adults to diagnose binocular dysfunctions. Binocular vision dysfunctions may hamper academic performance in children. Accommodative facility and accommodative accuracy are
Mousumi Saikia, Kamal Pant, Joydeep Dutta   +2 more
doaj   +1 more source

Comparison of the amplitude of accommodation determined subjectively and objectively in South African university students

African Vision and Eye Health, 2018
Background: Historically, two clinical methods have been used for measuring the amplitude of accommodation, which are the push-up and minus lens methods.
Solani D. Mathebula, Mologadi D. Ntsoane, Nkalebetja T. Makgaba, Khensani L. Landela   +3 more
doaj   +1 more source

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