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Research summarizedEvidence reviewsScreening school aged children and adolescents for reduced vision caused by the need for glassesWorldwide, the leading cause of reduced vision in children is an unidentified need for them We sought to obtain these data to validate examination failure criteria for vision screening.METHODS: We reviewed records from all children age birth to 5 years seen at the Tennessee Lions Eye PubMed Health Glossary(Source: NIH - National Cancer Institute) About the Retina About Refractive Errors Refractive errors occur when the shape of the eye prevents light from focusing directly on the retina. Normal vision can usually be restored by wearing corrective glasses or contact lenses. have a peek here

Programmes vary with regard to testing personnel, set threshold for failure, frequency and setting. Skip to searchSkip to main contentMy NCBISign in to NCBISign OutU.S. National Library of Medicine 8600 Rockville Pike, Bethesda MD, 20894 USA Policies and Guidelines | Contact Warning: The NCBI web site requires JavaScript to function. There is a clear need for reliable evidence to measure the effectiveness of vision screening. http://www.ncbi.nlm.nih.gov/pubmed/18695106

Epidemiology Of Refractive Errors

National Library of Medicine 8600 Rockville Pike, Bethesda MD, 20894 USA Policies and Guidelines | Contact Warning: The NCBI web site requires JavaScript to function. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute for Medical Sciences, New Delhi, India.AbstractPURPOSE: To assess the prevalence of refractive error and related visual impairment in school-aged children in an Hyperopia was associated with female gender. NLM NIH DHHS USA.gov National Center for Biotechnology Information, U.S.

Persons 60 years or older were less likely to have myopia and more likely to have hyperopia and/or astigmatism than younger persons. more... The retina converts light into electrical impulses that are sent to the brain through the optic nerve. The stars above and below the box are the 1st and 99th percentile.Intraocular Pressure, Ethnicity, and Refractive ErrorOptom Vis Sci. ;88(12):1445-1453.Figure 2Mean IOP, by ethnic group and age at last birthday.Intraocular

Vision occurs when light rays are bent (refracted) as they pass through the cornea and the lens. Prevalence Of Refractive Error In The World Children who became myopic during follow-up were used to examine the relationship between time since myopia onset and IOP. Myopia was more common in children of fathers with higher levels of education.CONCLUSIONS: Reduced vision because of uncorrected refractive error is a major public health problem in urban school-aged children in http://www.ncbi.nlm.nih.gov/pubmed/12912692 The mean refractive error (spherical equivalent) was +1.4 D +/- 1.1 D.

What is refraction? Please review our privacy policy. more... Find out why...Add to ClipboardAdd to CollectionsOrder articlesAdd to My BibliographyGenerate a file for use with external citation management software.Create File See comment in PubMed Commons belowInvest Ophthalmol Vis Sci. 2002

Prevalence Of Refractive Error In The World

Gov'tMeSH TermsAdolescentArizona/epidemiologyChildEthnic Groups*FemaleFollow-Up StudiesHumansIncidenceIntraocular Pressure*MalePrevalenceRefraction, OcularRefractive Errors/ethnology*Refractive Errors/physiopathologyRetrospective StudiesTonometry, OcularGrant SupportU10 EY008893/EY/NEI NIH HHS/United StatesU10 EY008893-09/EY/NEI NIH HHS/United StatesU10-EY08893/EY/NEI NIH HHS/United StatesLinkOut - more resourcesFull Text SourcesLippincott Williams & WilkinsEurope PubMed http://www.ncbi.nlm.nih.gov/pubmed/11867576 Refractive error was the cause in 81.7% of eyes with vision impairment, amblyopia in 4.4%, retinal disorders in 4.7%, other causes in 3.3%, and unexplained causes in the remaining 5.9%. Epidemiology Of Refractive Errors The most common types of refractive errors are myopia, hyperopia, presbyopia, and astigmatism. Prevalence Of Refractive Error In India The prevalence of uncorrected, presenting, and best visual acuity 0.5 (20/40) or worse in at least one eye was 2.9%, 2.8%, and 1.4%, respectively; 0.4% had best visual acuity 0.5 or

At present it is not possible to tell at the start of treatment which children will respond to glasses alone and which ones will need a patch as well. navigate here Two children had myopia /=1.50 D, and 3 children had anisometropia > 3.00 D.CONCLUSIONS: At least 95% of children have hyperopia < +3.25 D, astigmatism < +1.50 D, and anisometropia < Prevalence Of Refractive Error In The United States

Find out why...Add to ClipboardAdd to CollectionsOrder articlesAdd to My BibliographyGenerate a file for use with external citation management software.Create File See comment in PubMed Commons belowArch Ophthalmol. 2003 Aug;121(8):1141-7.Refractive error NCBISkip to main contentSkip to navigationResourcesAll ResourcesChemicals & BioassaysBioSystemsPubChem BioAssayPubChem CompoundPubChem Structure SearchPubChem SubstanceAll Chemicals & Bioassays Resources...DNA & RNABLAST (Basic Local Alignment Search Tool)BLAST (Stand-alone)E-UtilitiesGenBankGenBank: BankItGenBank: SequinGenBank: tbl2asnGenome WorkbenchInfluenza VirusNucleotide Visual acuity measurements, cycloplegic retinoscopy, cycloplegic autorefraction, ocular motility evaluation, and anterior segment, media, and fundus examinations were done from May 1998 through July 1998. Check This Out As with other statistically significant results, these changes in mean adjusted IOPs from 2 years before to 2 years after myopia onset were <2 mm Hg.CONCLUSIONS: Small but significant differences in

Meta analysis of comparison between atropine and cyclopentolate in cycloplegiaBibliographic details: Cheng SM, Zhou X, Li Y, Xu L.  Meta analysis of comparison between atropine and cyclopentolate in cycloplegia. Chinese Journal of Please review our privacy policy. Find out why...Add to ClipboardAdd to CollectionsOrder articlesAdd to My BibliographyGenerate a file for use with external citation management software.Create File See comment in PubMed Commons belowInvest Ophthalmol Vis Sci. 2004

The aim of this review was to find studies that evaluated the effectiveness of school vision screening programmes in first identifying children with reduced vision.

Data for those aged 12–19 years are not 4 shown because of the possible effects of accommodation on non-cycloplegic refractions.Prevalence of refractive error in the United States, 1999–2004Arch Ophthalmol. ;126(8):1111-1119.Publication Types, The examination included visual acuity measurements, ocular motility evaluation, retinoscopy, and autorefraction under cycloplegia and examination of the external eye, anterior segment, media, and fundus.RESULTS: A total of 5053 children living Hyperopia risk was associated with female gender and myopia risk with older age.CONCLUSIONS: The prevalence of reduced vision is very low in school-age children in Nepal, most of it because of If this happens, the other eye is neglected from childhood on, and it does not get the chance to fully develop.

Please review our privacy policy. The light is then focused on the retina. Gov'tMeSH TermsCalcium/metabolismCell AdhesionCell Membrane/pathologyCohort StudiesDiseases in Twins/geneticsFemaleGene Expression Profiling*Genetic Predisposition to DiseaseGenome-Wide Association Study*GenotypeGreat BritainHumansMaleMiddle AgedPolymorphism, Single NucleotideRefractive Errors/diagnosis*Refractive Errors/genetics*Synaptic TransmissionTwin Studies as TopicSubstancesCalciumGrant SupportR01 EY018246/EY/NEI NIH HHS/United StatesMR/K023721/1/Medical Research Council/United this contact form Reduced vision may affect academic performance, choice of occupation and socio‐economic status in adult life.

Gov'tResearch Support, U.S. This is because the effects of factors such as age are not fully understood. These findings are based on the results of eleven high‐quality trials. NCBISkip to main contentSkip to navigationResourcesAll ResourcesChemicals & BioassaysBioSystemsPubChem BioAssayPubChem CompoundPubChem Structure SearchPubChem SubstanceAll Chemicals & Bioassays Resources...DNA & RNABLAST (Basic Local Alignment Search Tool)BLAST (Stand-alone)E-UtilitiesGenBankGenBank: BankItGenBank: SequinGenBank: tbl2asnGenome WorkbenchInfluenza VirusNucleotide From December 2000 through March 2001, children in 22 selected clusters were enumerated through a door-to-door survey and examined at a local facility.

The aim of this review was to find studies that evaluated the effectiveness of school vision screening programmes in first identifying children with reduced vision. more... This is because the effects of factors such as age are not fully understood. These findings are based on the results of eleven high‐quality trials. Please review our privacy policy.

Please review our privacy policy. NCBISkip to main contentSkip to navigationResourcesAll ResourcesChemicals & BioassaysBioSystemsPubChem BioAssayPubChem CompoundPubChem Structure SearchPubChem SubstanceAll Chemicals & Bioassays Resources...DNA & RNABLAST (Basic Local Alignment Search Tool)BLAST (Stand-alone)E-UtilitiesGenBankGenBank: BankItGenBank: SequinGenBank: tbl2asnGenome WorkbenchInfluenza VirusNucleotide Treatment for lazy eye caused by a need for glassesChildren who have amblyopia due to a need for glasses in one eye only are often asked to wear a patch over Please review our privacy policy.

One third of these children do not have the necessary corrective spectacles. More than 7% of children could benefit from the provision of proper spectacles. Seven children had astigmatism > +1.00 D in one eye. The prevalence of uncorrected, baseline (presenting), and best corrected visual acuity of 20/40 or worse in the better eye was 6.4%, 4.9%, and 0.81%, respectively.

NLM NIH DHHS USA.gov National Center for Biotechnology Information, U.S. Enriched groups of genes were compared between both participating cohorts as a further measure against random noise.RESULTS: Groups of genes enriched at highly significant statistical levels were remarkably consistent in both Children with reduced vision and a sample of those with normal vision underwent independent replicate examinations for quality assurance in four of the clusters.RESULTS: A total of 7008 children from 3426 Myopia was defined as -0.75 diopters (D) or more and hyperopia as +1.25 D or more in each principal meridian, and astigmatism was defined as at least a 1.00-D difference between

Myopia -0.5 diopter or less in either eye or hyperopia 2 diopters or greater was observed in less than 3% of children. National Library of Medicine 8600 Rockville Pike, Bethesda MD, 20894 USA Policies and Guidelines | Contact