Results 91 to 100 of about 3,616,800 (230)

Refractive error maps: A predictive tool for refractive error progression

open access: yesOphthalmic and Physiological Optics
AbstractPurposeTo investigate the influence of axial length on different ocular parameters and create a predictive tool for refractive error progression.MethodsTwo eye models were used to simulate refractive errors, namely the Liou–Brennan and the Goncharov–Dainty. Both models were simulated using Zemax OpticStudio.
Fabian Debowy, Barbara Pierscionek
openaire   +2 more sources

ERRORS OF REFRACTION. [PDF]

open access: yesJAMA: The Journal of the American Medical Association, 1895
These eighteen propositions will assist the beginner to more readily understand the many pages treating of the same subjects in all our text-books. With a second lecture on the lenses which correct the errors of refraction, and a third lecture on the frames which hold the lenses which correct the errors of refraction, we will have completed the "House
openaire   +1 more source

Sensitivity and Specificity of Preschool Vision Screening in Iran

open access: yesIranian Journal of Public Health, 2017
Background: To determine the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the National Vision Screening Program for 7 yr old children in Iran.
Hassan HASHEMI   +6 more
doaj  

REFRACTIVE ERRORS IN ADULTS STUDIED AT A TEACHING HOSPITAL

open access: yesGomal Journal of Medical Sciences, 2016
Background: Refractive errors are one of the commonest causes of visual impairment and disability. The aim of this study was to evaluate the distribution of different types of refractive errors.
Hidayatullah Mahsud   +3 more
doaj  

Factors Associated with Refractive Errors among School Children in Rural Field Practice Area of a Tertiary Care Hospital, Bangalore

open access: yesNational Journal of Community Medicine, 2018
Background: 285 million people are visually impaired worldwide. An estimated 19 million children are visually impaired, and 12million are visually impaired due to Refractive Errors.
Usha S   +2 more
doaj  

Frequency of Refractive Errors in Children Visiting Eye Out Patients Department Agency Headquarter Hospital Landi Kotal

open access: yesGomal Journal of Medical Sciences, 2009
Background: Refractive errors in children are one of the leading causes of preventable blindness. Prevalence of various refractive errors in children is alarming.
Mohammad Junaid Sethi   +2 more
doaj  

Proportion of refractive errors among undergraduate students of a medical college in South Kerala

open access: yesJournal of Clinical Ophthalmology and Research
Background: Refractive errors are a leading cause of vision impairment, affecting over a billion people worldwide. Medical students are at high risk due to prolonged screen exposure and academic demands.
S. N. Ajas, N. Asha Raby
doaj   +1 more source

Development of Refractive Errors-What Can We Learn From Inherited Retinal Dystrophies?

open access: yesAmerican journal of ophthalmology-glaucoma, 2017
M. Hendriks   +33 more
semanticscholar   +1 more source

Optical services through outreach in South India: a case study from Aravind Eye Hospitals

open access: yesCommunity Eye Health Journal, 2006
The need to correct refractive errors Refractive errors are a priority within the global initiative for the elimination of avoidable blindness, VISION 2020: The Right to Sight.1,4 Until recently, refractive errors never figured as a cause of vision ...
Ramasamy Meenakshi Sundaram   +1 more
doaj  

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