PT - JOURNAL ARTICLE ED - , TI - E. COLLIER GREEN AID - 10.1136/bjo.17.9.571-a DP - 1933 Sep 01 TA - British Journal of Ophthalmology PG - 571--572 VI - 17 IP - 9 4099 - http://bjo.bmj.com/content/17/9/571.2.short 4100 - http://bjo.bmj.com/content/17/9/571.2.full SO - Br J Ophthalmol1933 Sep 01; 17