PT - JOURNAL ARTICLE ED - BMJ Publishing Group Ltd.BMA House, Tavistock Square, London, WC1H 9JR TI - Abstracts AID - 10.1136/bjo.26.12.560 DP - 1942 Dec 01 TA - British Journal of Ophthalmology PG - 560--565 VI - 26 IP - 12 4099 - http://bjo.bmj.com/content/26/12/560.short 4100 - http://bjo.bmj.com/content/26/12/560.full SO - Br J Ophthalmol1942 Dec 01; 26