Assessing cataract patient understanding of proper eyedrop instillation in Chennai, India

Sociodemographic factors (age, gender, education, residence, poverty score, administration by self/other, previous use) were analyzed for association with understanding the prescribed regimen and proper instillation. Participants who self-administered were more likely than those with another administrator to have below average knowledge test scores (odds ratio: 4.18, 95% confidence interval: 1.18, 14.82, P = 0.03). To our knowledge, this was the first study to assess cataract patients in southern India for the underlying determinants of understanding prescribed instructions before initiating instillation outside of a clinical setting.