Effect of Binasal Occlusion on Refractive Errors Among Young Adult: A Comparative Study.

Binasal occlusion is a method of partial covering of the visual field of the two eyes by placing of opaque tape on the nasal portion of the lenes. Peripheral awareness is ability to simultaneously perceive what is center and appreciate what may or may not be off to the sides. The aim of this study is to evaluate the effect of binasal occlusion on changes in refractive status among young adults with varying baseline refractive errors. Baseline evaluation included visual acuity (VA), refraction, binocular vision (BV) evaluation, peripheral awareness, and the Visual Symptom Questionnaire (COVD-QOL-19). Binasal occlusion was applied for two weeks using micropore tape positioned just touching the nasal limbus. After two weeks of binasal occlusion, post-occlusion evaluation was performed, including VA, refraction, BV evaluation, peripheral awareness, and the Visual Symptom Questionnaire (COVD-QOL-19). Follow-up evaluation was conducted two weeksafter discontinuing binasal occlusion, using the same assessment parameters. Finally, data entry, analysis and interpretation were carried out.