In comparisons of persons with and without cataract , persons with the highest riboflavin intake versus those with the lowest intake had the following associations : mild nuclear cataract : odds ratio ( OR ) , 0.78 ; 95 % confidence interval ( CI ) , 0.63-0 .97 ; moderate nuclear cataract : OR , 0.62 ; 95 % CI , 0.43-0 .90 ; and mild cortical cataract : OR , 0.80 ; 95 % CI , 0.65-0 .99 .