Results 1 to 10 of about 3,191,049 (221)

Refractive errors. [PDF]

open access: yesDeutsches Ärzteblatt international, 2016
BACKGROUND All over the world, refractive errors are among the most frequently occuring treatable distur - bances of visual function. Ametropias have a prevalence of nearly 70% among adults in Germany and are thus of great epidemiologic and socio ...
U. Schiefer   +4 more
semanticscholar   +4 more sources

Uncorrected refractive errors

open access: yesIndian Journal of Ophthalmology, 2012
Global estimates indicate that more than 2.3 billion people in the world suffer from poor vision due to refractive error; of which 670 million people are considered visually impaired because they do not have access to corrective treatment.
Kovin S Naidoo, Jyoti Jaggernath
doaj   +3 more sources

Refractive error blindness

open access: yesBulletin of the World Health Organization, 2001
Recent data suggest that a large number of people are blind in different parts of the world due to high refractive error because they are not using appropriate refractive correction.
Dandona Rakhi, Dandona Lalit
doaj   +4 more sources

Agreement of Ocular Biometry Measured by LenStar LS 900 and CASIA2 Optical Coherence Tomography [PDF]

open access: yesReviews in Clinical Medicine, 2021
Introduction:The present study aimed to compare the anterior segment measurements between optical low-coherence reflectometry (LenStar LS900) and anterior segment optical coherence tomography (CASIA2 OCT). Methods:A total of 198 right eyes of 198 healthy
Maliheh Karimpour   +4 more
doaj   +1 more source

Comprehensive evaluation of dehydration impact on ocular tissue during Ramadan fasting [PDF]

open access: yesJournal of Fasting and Health, 2015
Purpose: The present study aimed to review the effect of dehydration during Ramadan fasting on the health and ocular parameters leading to changes in eye function.
Javad Heravian   +6 more
doaj   +3 more sources

Ocular changes in premature infants [PDF]

open access: yesReviews in Clinical Medicine, 2017
Introduction: This article aimed to review the literatures on visual impairments and ocular changes in premature infants with low birth weight and gestational age.Methods: Five electronic databases including: PubMed, Web of Science, Science direct, Ovid,
Negareh Yazdani   +6 more
doaj   +1 more source

The Correlation between Glucose and Lipid Biomarkers Variations with biometric characteristics and Intraocular Pressure Changes during Ramadan Fasting [PDF]

open access: yesJournal of Fasting and Health, 2018
Introduction: The aim of present study was to assess the correlation between glucose and lipid biomarkers variations with biometric characteristics and intraocular pressure changes following Ramadan fasting.
Mohammad Reza Sedaghat   +4 more
doaj   +1 more source

Calculating the error in refractive error [PDF]

open access: yesEye, 2011
To demonstrate a quick way of calculating the optical difference between two refractions using vector analysis, and to express this as a score for examination purposes.An existing formula is applied, converted to a defocus equivalent, and then converted to a score.
R B Ellingham   +3 more
openaire   +3 more sources

Effect of Phacoemulsification on Macular Thickness and Volume in Diabetic Patients without Retinopathy [PDF]

open access: yesReviews in Clinical Medicine, 2020
Introduction: This study aimed to investigate the effect of phacoemulsification on macular thickness and volume in diabetic patients without retinopathy using optical coherence tomography (OCT).Methods: This prospective study included 37 diabetics and 55
Zahra Ameri Golestan   +6 more
doaj   +1 more source

Prevalence of refractive errors in Iranian university students in Kazerun [PDF]

open access: yes, 2020
Purpose: To determine the prevalence of refractive errors and visual impairment and the correlation between personal characteristics, including age, sex, weight, and height, with different types of refractive errors in a population of university students
Ali, B.   +7 more
core   +1 more source

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