Prevalence of refractive error in school children. Vertical bars: SDs.View OriginalDownload Slide Figure 2. Previous SectionNext Section DISCUSSION As the prevalence of blindness in children is much lower than in adults, a larger sample size of children is needed to provide accurate data on the Considering both the studies together, refractive error, which can be easily treated with spectacles, was responsible for one third of the blindness. Source
Geneva: WHO, 1997. 3. Muñoz Unidad de Epidemiologica Clinica, Universidad de la Frontera, Temuco, Chile; Gopal P. In general, cluster design effects as represented by design effect values seldom greater than 1.5 were modest and thus had little impact on the statistical power of the survey. Baseline (presenting) Geneva: WHO, 1997 (WHO/PBL/97.61). ↵ World Health Organization.
Though every attempt was made by the field team to recruit blind children or children with multiple handicaps from the sample households who were away at special schools, it is possible The major causes of the remaining blindness included congenital eye anomalies (16.7%) and retinal degeneration (16.7%). Please try the request again. The 95% limits of agreement between the two methods were− 0.615 and +0.353 D in right-eye measurements, and −0.607 and +0.390 in left-eye measurements.
Refractive errors in an urban population in southern India: The Andhra Pradesh Eye Disease Study. Ocular morbidity among school children in SarojiniNagar Lucknow. Arch Ophthalmol. 1996;114:326–332. [CrossRef] [PubMed]14Angle A, Wissmann DA. Studies On Refractive Errors Data points represent a 1-D interval (for example, those associated with +1 on the x-axis represent more than +0.50 D to +1.50 D or less).
Children with spectacles were requested to bring them on the day of the examination. Prasad Eye Institute has recently established a rural eye center in the district, which was important in facilitating study logistics. Programme for the Prevention of Blindness and Deafness. More hints Again, older children were more likely to be unavailable for examination, even though they may have been enumerated.
Autorefraction produced marginally more negative measurements than retinoscopy, suggesting that cycloplegia may have been incomplete in some children. Refractive Error Pdf Ann Acad Med, Singapore. 1992;21:785-91. [Pubmed] 17. Prasad Eye Institute, Hyderabad, India; the Sergio R. The epidemiology of myopia.
The causes of blindness are shown in Table 1. check that Programme for the Prevention of Blindness and Deafness, and International Agency for Prevention of Blindness.Geneva: WHO, 2000. 4. Prevalence Of Refractive Error In The World Previous SectionNext Section METHODS Blindness was defined as presenting visual acuity of <6/60 in the better eye. Prevalence Of Refractive Error In Children Maul E, Barroso S, Munoz SR, Sperduto RD, Ellwein LB.
Investigative Ophthalmology & Visual Science March 2002, Vol.43, 615-622. The Refractive Error Study in Children was supported by the World Health Organization, Geneva, Switzerland under National Institutes of Health Contract N01-EY-2103. Autorefraction yielded higher levels of astigmatism, as was the case in all but China. Notable differences in the prevalence of myopia, hyperopia, and astigmatism were found between this rural population and have a peek here Family members living and eating in the same premises were defined as a household.
Education Current Online first Register for free content Free sample This recent issue is free to all users to allow everyone the opportunity to see the full scope and typical content Prevalence Of Myopia In Indian Population In 103 (2.6%) children, acuity was 20/40 or worse in both eyes, including 7 (0.18%) children who were blind, with acuity less than 20/200 in the better eye. To improve the participation rate in this age group, the field team revisited households toward the end of the study.
Data for wearing glasses are number examined, with percentage of those within each uncorrected visual acuity category in parentheses. * Confidence intervals were calculated using the exact binomial distribution instead of Murthy GV, Gupta SK, Ellwein LB, Mu-oz SR, Pokharel GP, Sanga L, et al. In two of these five children, visual acuity could not be measured. Pubmed Refractive error study in children: results from La Florida, Chile.
Your cache administrator is webmaster. Blindness was defined as presenting distance visual acuity <6/60 in the better eye. The principal cause of visual impairment of 20/40 or worse was assigned after completion of the ocular examination, using a seven-item list (refractive error, amblyopia, corneal opacity due to trachoma, other http://supercgis.com/refractive-error/refractive-error-in-central-india.html Visiting children (resident <6 months), institutionalized children, and those away for 6 months or more were not included in the study population. A card with the scheduled date for the eye
Ophthalmol. There were no significant associations of age or gender with hyperopia. Magnitude of Refractive Errors among school children in a rural block of Haryana. Examination procedures have been described in detail elsewhere. 5 In brief, the examination by the ophthalmic technicians included distance visual acuity measurements, ocular motility evaluation, and retinoscopy and autorefraction after
Pokharel Foundation Eye Care Himalaya, Kathmandu, Nepal; and the Leon B. more... Zhao J, Pan X, Sui R et al. Familial aggregation and prevalence of myopia in the Framingham offspring eye study.
Results: The prevalence of childhood blindness was 0.17% (95% confidence interval 0.09 to 0.30). Data points represent a 1-D interval (for example, those associated with +1 on the x-axis represent more than +0.50 D to +1.50 D or less). Am J Ophthalmol. 2000;129:436–444. [CrossRef] [PubMed]8Maul E, Barroso S, Munoz SR, et al. Children were transported to the examination site on the scheduled date.