The risk factors for Blindness and VI based on presenting visual acuity across different studies in India and neighbouring countries.

OR: Odds Ratio; Ref: Reference Group; CI: Confidence Interval; ∧: Reference group: Female; *Reference group: Illiterate; $: Reference group: Rural location; #: Primary education; &: Secondary education; +: Higher with increasing age (Odds ratio and 95% CI not available); ++: Higher in females (Odds ratio and 95% CI not available).