Results 21 to 30 of about 3,616,800 (230)

Prevalence of refractive errors in children in India: a systematic review

open access: yesClinical and experimental optometry, 2018
Uncorrected refractive error is an avoidable cause of visual impairment which affects children in India. The objective of this review is to estimate the prevalence of refractive errors in children ≤ 15 years of age.
S. Sheeladevi   +5 more
semanticscholar   +1 more source

Association between Refractive Error Types and Asthenopia in Primary School Students

open access: yesMajalah Kedokteran Bandung, 2021
Refractive error is a condition in which the cornea and lens fail to focus the light, resulting in reduced visual efficiency. Twelve million children are experiencing refractive errors worldwide and uncorrected refractive errors in children have been ...
Vanessa Kuswanto   +2 more
doaj   +1 more source

Prevalence and Risk Factors of Amblyopia among Refractive Errors in an Eastern European Population

open access: yesMedicina, 2018
Background and objective: Amblyopia is the leading cause of visual impairment in children and adults and is very common during childhood. The aim of this study was to identify the prevalence and the risk factors of amblyopia in a pediatric population ...
V. Mocanu, Raluca Horhat
semanticscholar   +1 more source

Comparison of cyclopentolate versus tropicamide cycloplegia: A systematic review and meta-analysis

open access: yesJournal of Optometry, 2018
Purpose: The aim of the present meta-analysis is to compare the efficacy of cyclopentolate and tropicamide in controlling accommodation during refraction. Methods: A comprehensive literature search was performed in PubMed, Scopus, Science direct and Ovid
Negareh Yazdani   +4 more
doaj   +1 more source

REFRACTIVE ERRORS

open access: yesThe Professional Medical Journal, 2011
Objective: To know the profile of refractive errors in school age children in DHQ Hospital Karak and group of teaching Hospitals Bannu. Setting: DHQ Hospital Karak and group of Teaching hospitals Bannu. Period: Two years study from August 2007 to August 2009. Design: Descriptive study. Materials & Methods: A work up proforma was prepared for record
MOHAMMAD ALAM, MOHAMMAD FAREED
openaire   +2 more sources

Metrology of Complex Refractive Index for Solids in the Terahertz Regime Using Frequency Domain Spectroscopy [PDF]

open access: yes, 2018
Frequency domain spectroscopy allows an experimenter to establish optical properties of solids in a wide frequency band including the technically challenging 10 THz region, and in other bands enables metrological comparison between competing techniques ...
Chick, Steven   +3 more
core   +2 more sources

Amblyopia, Strabismus and Refractive Errors in Congenital Ptosis: a systematic review and meta-analysis

open access: yesScientific Reports, 2018
Congenital ptosis may be associated with abnormalities of visual development and function, including amblyopia, strabismus and refractive errors. However, the prevalence estimates of these abnormalities vary widely.
Yijie Wang   +4 more
semanticscholar   +1 more source

Prevalence and Burden of Refractive Errors at National and Sub-national Levels in Iran

open access: yesJournal of Ophthalmic & Vision Research, 2022
Purpose: To estimate the prevalence, burden of refractive errors and their associated trend from 1990 to 2018 and geographic inequalities in Iran. Methods: Data regarding the epidemiology of refractive errors was extracted from three different sources ...
Seyed Mohammadi   +6 more
doaj   +1 more source

Refractive errors among medical students in Jordan: prevalence, types and possible risk factors

open access: yesFuture Science OA, 2023
Aim: This study aims to determine the prevalence of refractive errors among medical students in Jordan. Materials & methods: Cross-sectional model through an online questionnaire was conducted.
Asem A Alqudah   +2 more
doaj   +1 more source

NETRA: Interactive Display for Estimating Refractive Errors and Focal Range [PDF]

open access: yes, 2010
We introduce an interactive, portable, and inexpensive solution for estimating refractive errors in the human eye. While expensive optical devices for automatic estimation of refractive correction exist, our goal is to greatly simplify the mechanism by ...
Ankit Mohan   +9 more
core   +1 more source

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