TY - JOUR T1 - R. J. LYTHGOE JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 199 LP - 200 DO - 10.1136/bjo.24.4.199 VL - 24 IS - 4 A2 - , Y1 - 1940/04/01 UR - http://bjo.bmj.com/content/24/4/199.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -