: To identify the prevalence of myopia and its risk factor among the school going children.Study sample included school going children between 5 and 16 years of age. We recorded degree of myopia by autorefractometer and streak retinoscopy after mydriasis, and students with refractive error of ≥-0.5 D for at least one eye were considered as myopic. Strict inclusion and exclusion criteria were followed.A total of 764 children were considered for the study. Prevalence of childhood myopia in hospital based study was 16.5 % with male to female ratio 53:47. Headache was most common complain for hospital visit. Most common age group affected was 7-12 and 13-16 years. In 18.53% of patients family history was present.Due to high magnitude of uncorrected myopia, it appears to be a public health problem both in urban areas, which suggest that an increase in outdoor activity may help to reduce the magnitude of the problem.
Measurement of intraocular pressure (IOP) is basic investigation in a general ophthalmic workup. We attempt to determine the agreement in the measurement of IOP obtained by Goldman applanation tonometer, Perkin’s applanation tonometer, Non-contact tonometer in patients attending general ophthalmology OPD in a tertiary care centre in South India and its use in a community ophthalmology settingA cross-sectional analytical study in which IOP was measured in patients using the three tonometers. Central corneal thickness (CCT) was measured using Ultrasonic pachymetry. Bland Altman analysis was done to evaluate the agreement between instruments. 800 eyes of 400 patients were included in the study. By Bland Altman method, Perkin’s tonometer was found to have better correlation to IOP obtained by Goldman applanation tonometer. Perkin’s tonometer was found to be most accurate when CCT was in the range of 501–550 microns and noncontact tonometer was found to be least accurate when CCT was greater than 600 microns. On comparing correlation at different age groups, both the methods had better correlation at <40 years age group.Both the tonometers showed a significant correlation with the gold standard technique GAT over a range of IOP and CCT with the Perkin’s tonometer better than the NCT. This study proves that Perkin’s tonometer can be recommended as a reliable screening tool in community outreach ophthalmology services. The twin advantages of portability and availability make the Perkin’s tonometer a popular choice among ophthalmology trainees and optometrists in a developing country like India.
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