Authenticity of glasses prescribed after cycloplegic refraction as verified by Post Mydriatic Test (PMT).

Abstract

PURPOSE: To find out the best way of correcting refractive errors between cycloplegic and post-mydriatic test and also to confirm the authenticity of the latter.

METHOD: This was a cross-sectional study to evaluate the authenticity of glasses prescribed after cycloplegic refraction as verified by Post Mydriatic Test (PMT). The study was conducted on 30 patients having refractive error with the range of 5 to 15 years of age. Visual acuity of the patient was taken by using log Mar Chart. Refraction was done with retinoscopy by cycloplegic refraction on patients. After few days patient was recalled for post mydriatic test to find the authenticity of glasses prescribed after cycloplegic refraction. This study was conducted from September to November, 2017.

RESULTS: This study includes a total of 30 patients (comprising both right and left eyes). Out of 30 patients, 51.72% (16) were male and 48.28% (14) were females. Mean value, standard deviation (SD) and the 95% confidence interval (CI), for the total sample of cycloplegic refraction as verified by post mydriatic test were studied. Non-statistically significant differences in the cycloplegic refraction and post mydriatic refraction were found among the study groups (p>0.05, Paired Sample Test). A non-significant relationship was also found between glasses prescribed after cycloplegic refraction and verified after few days by post mydriatic test.

CONCLUSION: This study concludes that there is no significant relationship between visual factors related to cycloplegic refraction and refraction after post mydriatic test. There is no improvement in vision after post mydriatic test and just a tonus allowance effect is canceled. The authenticity of glasses prescribed to the patient using cycloplegic refraction prescription is the same as verified by post mydriatic test refraction.