TY - JOUR T1 - A. HILL GRIFFITH JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 123 LP - 125 DO - 10.1136/bjo.22.2.123 VL - 22 IS - 2 A2 - , Y1 - 1938/02/01 UR - http://bjo.bmj.com/content/22/2/123.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -