Assessment of Pinhole for Visual Acuity Recoverment in Patients with Myopia

Abstract

Refractive errors are difficulties with concentrating retina light accurately because of the cornea or eye shape. The mostly mutual refractive error types are near sightedness, farsightedness, astigmatism, and presbyopia. Refractive errors can be fixed with contact lenses or glasses, or fix the refractive error with surgery. One of the most valuable way to correct the visual acuity is the usage of glasses as pinhole. Glasses as pinhole are typically eyeglasses with lenses that are full of a grid of tiny holes. They help eyes concentrate through shielding vision from indirect light rays. Through allowing less light into the eye, few people can see more clearly.1 In this work, the pinhole technique will be described with their usage to correct the visual acuity. In addition, 40 patients with myopia and astigmatism have been tested using the pinhole to assess the more useful pinhole size for the visual acuity correction. Results: The finding revealed no difference of significance in refractive error of both myopic left (p= 0.07) and right eyes (p= 0.06) without and with glasses as pinhole. Also there was no significant different for gender (male, female), and there was no significant different between patients with age ≤20years and patients with age >50 years values. Conclusion: The findings propose that glasses as pinhole did not recover the refractive myopic participant’s error.