Figure 1. Inhibition of cataract formation by caffeine. Trans-illumination photographs of representative lenses isolated from rats fed 24% Galactose diet without and with 1% Caffeine: Peripheral ring opacity (cortical cataract) was highly apparent in the untreated group (g), representing the early stage of galactose cataract. The lenses in the treated group receiving caffeine were transparent (g+c).