Screening for Pattern of Uncorrected Refractive Errors Among Patients in a Tertiary Health Care Centre in Coimbatore: a Cross-sectional Study.

1.Adult patients reporting with Uncorrected Refractive Errors to the Department of Ophthalmology will be undertaken as subjects for the cross-sectional study.

2.Visual acuity testing will be done for patients using Snellen’s Chart for distant vision and Jaeger’s Chart for near vision, following detailed examination of eye will be done to rule out causes of visual impairment other than refractive errors.

3.Patients who have difficulty reading 6/6 and N/6 will be evaluated under an auto-refractometer, and after cycloplegic instillation they will be examined under a streak retinoscope, followed by slit lamp examination and indirect ophthalmoscope examination to rule out other defects in the anterior and posterior segment, respectively.

4.Following appropriate protocol, ensuring quality control, and assessing through standard calibrated instruments, refractive error findings will be recorded and categorized. Data will be collected and recorded with the help of various statistical tools.

5.Through maintaining confidentiality and following ethical principles, the data will be collected from the patient population and made to analyze, categorize according to varying refractive errors.

6.Refractive errors like myopia, hypermetropia, and astigmatism will be segregated in groups. A proportion of these uncorrected refractive errors in the patient population from a tertiary health care centre will be reported.