TY - JOUR T1 - On difficulties in deciding the aetiology of cataract. JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 69 LP - 70 DO - 10.1136/bjo.63.1.69-a VL - 63 IS - 1 AU - R F Fisher AU - R A Weale Y1 - 1979/01/01 UR - http://bjo.bmj.com/content/63/1/69.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -