For visual acuity 20/40 or worse in the better eye (i.e., both eyes), the respective percentages were 2.6% and 0.78%. Elimination of Avoidable Visual Disability Due to Refractive Errors. 2000; World Health Organization Geneva. The prevalence of myopia is less than 2% before 7 or 8years but increases with age and reaches 20% at 15year. The children were aged between five and 19 years (mean = 10.5 ± 3.4 years, 95% confidence interval [CI]: 10.3–10.7). Source
Table 3. View Table Prevalence of Ametropia by Age with Cycloplegic RetinoscopyTable 3. Prevalence of Ametropia by Age with Cycloplegic Retinoscopy Age (y) Myopia* (%; 95% CI) Hyperopia, † (%; 95% CI) 7 2.80; Keywords Refractive error Myopia Students School Children BackgroundRefractive error is a state in which optical system of the eye fails to adjust to bring parallel rays of light to focus on Girls had a somewhat better overall examination response rate: 93.3% compared with 91.4% in boys. By accessing the work you hereby accept the Terms. http://www.ncbi.nlm.nih.gov/pubmed/18988392
Download Article [PDF] Readers of this article also read: Review Highly Accessed Causative factors for formation of toxic islet amyloid polypeptide oligomer in type 2diabetes mellitus Jeong HR, An SSA For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms. The Mahabubnagar district has 64 mandals (administrative units) of which five mandals with villages within a 50-km radius of the rural eye center were chosen for the study.
Regular use of computers,video or reading: reading/watching at least once a day for not less than 2hours. Data analysis Data were entered using epi data statistical software version 3.1 and analyzed using SPSS version 20. The prevalence of hyperopia, myopia and astigmatism was 5.0%, 1.7% and 6.6% respectively. Lancet. 1986;1(8476)307–310. [PubMed]13The Framingham Offspring Eye Study Group.
Owen, None Footnotes Support Central LOC Fund, UK: Johnson & Johnson Ltd Investigative Ophthalmology & Visual Science March 2012, Vol.53, 2311. Prevalence Of Refractive Error In Children Koirala Lions Center for Ophthalmic Studies, Institute of Medicine, Maharajgunj, Kathmandu, Nepal. Myopia risk was associated with female gender and having a father with a higher level of schooling. http://www.journalofoptometry.org/en/refractive-error-among-school-children/articulo/S1888429611700413/ Niroula,C.G.
This could be due to the difference in the study site (hospital based versus school based).The uptake of refractive service was 4 (9.3%) and spectacle utilization was 1(4.6%). Available at: http://openmed.nic.in/1933/01/bhatt1.pdf12.Y.D. Vis. A total of 1103 school children were enumerated out of which 961 underwent a full eye examination.
Age-specific prevalences of myopia and hyperopia were estimated. http://iovs.arvojournals.org/article.aspx?articleid=2200127 Myopia was found among the most dominant 5.47% followed by astigmatism 1.9% and hyperopia 1.4% in both sexes. Prevalence Of Refractive Error In India 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. Prevalence Of Refractive Error In The World For children with no history of current spectacle wear, uncorrected myopia was found in 10.1% (95% CIs 6.7-13.6) 12 -13 year olds and 6.9% (95% CIs 4.1-9.8) 6-7 year olds; uncorrected
Among these school children, 48.6% were male and 51.4% were female giving ratio of 0.94.Table 1.Distribution of students in private (PS) and government schools (GS) by age and sex Distribution by this contact form Autorefraction produced marginally more negative measurements than retinoscopy, suggesting that cycloplegia may have been incomplete in some children. All the children attending the schools visited were included in the study. Vertical bars: SDs.
Though programme has to be focused on all type of refractive errors, more provision is required to reduce or eliminate visual impairment due to myopia in elder students. Out of these 23 primary schools, 4 are found in rural areas. The study’s purpose was explained to the man or woman of the household during the enumeration.
Owing to this fact we would have missed some other important clinical conditions which could have been prevalent in other schools.Prevalence of refractive error was found invariably increased with increasing age or Subscribe Now AdvancedSearch All Journals IOVS JOV TVST Issues Topics For Authors About Editorial Board Subscriptions March 2012 Volume 53, Issue 14 ‹ Issue › Free ARVO Annual Meeting Abstract| Nepal (2003)7 found 8.1% in Kathmandu, Niroula (2009)8 reported 6.43% in Pokhara, Kassa (2003)9 reported 7.6% in Ethiopia, and Kalikivayi (1997) reported 7.4% in India.10 But different prevalence rates were found Moreover, we did not include rural children.
Keywords: myopia • hyperopia • clinical (human) or epidemiologic studies: health care delivery/economics/manpower © 2012, The Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Hyperopia was defined as spherical power of ≥ + 0.75 D, myopia as ≤ – 0.50 D and astigmatism as a cylindrical power of ≤ – 0.50 D. April - June 2011 | Next article J Optom 2011;4:49-55 - Vol. 4 Num.2 DOI: 10.1016/S1888-4296(11)70041-3 Ahead of Print / Home / Archive Archive Past Issues / Section Index / Check This Out Design effects ranging from 0.620 to 2.185 were taken into account in calculating confidence intervals for estimates based on the normal approximation.
The association of myopia with the father’s educational level may represent an environmental effect, as well as a genetic one if fathers with myopia are more likely to have higher levels Pokharel; Leon B. EllweinThe prevalence of visual impairment in school children of upper-middle socioeconomic status in KathamnduOphthalmic Epidemiol, 15 (2008), pp. 17-23Medline13.A. Few population-based data on refractive error are available from India, 2 but some are available for children attending school. 3 Data obtained only from children going to school cannot be reliably
Table 2. View Table Distribution of Uncorrected, Baseline, and Best Corrected Visual AcuityTable 2. Distribution of Uncorrected, Baseline, and Best Corrected Visual Acuity Visual Acuity Category Uncorrected Visual Acuity Wearing Glasses Baseline Visual Acuity SharmaOcular morbidity in schoolchildren in KathmanduBr J Ophthalmol, 87 (2003), pp. 531-534Medline8.D.R.