TY - JOUR T1 - Correspondence JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 254 LP - 254 DO - 10.1136/bjo.37.4.254 VL - 37 IS - 4 AU - Frank W. Law Y1 - 1953/04/01 UR - http://bjo.bmj.com/content/37/4/254.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -