RT Journal Article SR Electronic T1 Prevention strategies for age related cataract: present limitations and future possibilities JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 516 OP 520 DO 10.1136/bjo.85.5.516 VO 85 IS 5 A1 Nathan G Congdon YR 2001 UL http://bjo.bmj.com/content/85/5/516.abstract AB