Similarly , HRs of vision loss of 2 lines or more at 5 years for this degree of lens changes at 2 years were the following : nuclear , 1.83 ( 95 % CI , 1.49-2 .25 ; P < 0.001 ) ; cortical , 1.13 ( 95 % CI , 0.78-1 .65 ; P = 0.519 ) ; and posterior subcapsular cataract , 3.05 ( 95 % CI , 1.79-5 .19 ; P < 0.001 ) .