Results 21 to 30 of about 19,203 (283)

A pilot study: lenticule quality of hyperopic small incision lenticule extraction (SMILE) in rabbits

open access: yesBMC Ophthalmology, 2020
Background To evaluate lenticule surface characteristics of small incision lenticule extraction (SMILE) for hyperopia correction in rabbits. Methods The left and right eyes of 8 rabbits were divided into two groups.
Yu Zhao   +4 more
doaj   +1 more source

A retinoscopic survey of 333 horses and ponies in the UK [PDF]

open access: yes, 2014
Introduction: Ophthalmic examination in the horse is generally limited to crude assessment of vision and screening for ocular lesions. The refractive state of equine eyes and the potential impact on vision and performance requires further ...
Chung   +38 more
core   +1 more source

Genome-wide search for strabismus susceptibility loci. [PDF]

open access: yes, 2003
The purpose of this study was to search for chromosomal susceptibility loci for comitant strabismus. Genomic DNA was isolated from 10mL blood taken from each member of 30 nuclear families in which 2 or more siblings are affected by either esotropia or ...
Fujiwara, Hirotake   +6 more
core   +1 more source

Hypermetropia, myelinated retinal nerve fiber and amblyopia: Reverse straatsma syndrome

open access: yesTNOA Journal of Ophthalmic Science and Research, 2022
Myelinated retinal nerve fibers (MRNF) are a common developmental anomaly. MRNF is commonly associated with myopia. The association of MRNF with myopia, amblyopia, and strabismus is well documented. The amblyopia may be refractory to treatment. We report
Saranya Settu, Muthumeena Muthumalai
doaj   +1 more source

Myopia and defocus: the current understanding [PDF]

open access: yes, 2011
The current theories relating to the development and progression of myopia are related to exposure of the eye to hyperopic defocus. This paper discusses these theories and the large body of recent research investigating the evidence behind them.
Day, Mhairi, Duffy, Lorraine
core   +1 more source

Corneal visualization Scheimpflug technology evaluates corneal biomechanical properties in children with different refractive states

open access: yesDi-san junyi daxue xuebao, 2021
Objective To evaluate the corneal biomechanical parameters in myopic, hypermetropic and emmetropic eyes using corneal visualization Scheimpflug technology (CorVis ST).
LI Fang   +4 more
doaj   +1 more source

Adequacy of the Fogging Test in the Detection of Clinically Significant Hyperopia in School-Aged Children

open access: yesJournal of Ophthalmology, 2019
Purpose. To evaluate the efficacy of the “fogging test,” performed with a +2 diopters (D) lens, in the exclusion of clinically significant hyperopia in school-aged children. Methods.
João Esteves Leandro   +7 more
doaj   +1 more source

Assessment of Changes in Cyliary Muscle in Patients with Hypermetropy Using Mathematical Modeling Methods

open access: yesActa Biomedica Scientifica, 2019
Background. Age-related decline in accommodation in patients with emmetropia, myopia and hyperopia is characterized by multidirectional changes in the thickness of the ciliary muscle and the configuration of the inner apex of the ciliary body.
A. G. Shchuko   +3 more
doaj   +1 more source

Myopia prevalence in school-aged children in Garki District of Abuja, Nigeria

open access: yesAfrican Vision and Eye Health, 2022
Background: Prevalence of myopia is increasing globally, hence it poses a significant public health risk due to the association of high myopia with debilitating eye disorders.
Tope R. Akinbinu   +2 more
doaj   +1 more source

Eye shape and retinal shape, and their relation to peripheral refraction [PDF]

open access: yes, 2012
Purpose: We provide an account of the relationships between eye shape, retinal shape and peripheral refraction. Recent findings: We discuss how eye and retinal shapes may be described as conicoids, and we describe an axis and section reference system for
Atchison, David   +4 more
core   +2 more sources

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