PT - JOURNAL ARTICLE ED - BMJ Publishing Group Ltd.BMA House, Tavistock Square, London, WC1H 9JR TI - Alan Seymour Philps AID - 10.1136/bjo.40.5.318 DP - 1956 May 01 TA - British Journal of Ophthalmology PG - 318--319 VI - 40 IP - 5 4099 - http://bjo.bmj.com/content/40/5/318.short 4100 - http://bjo.bmj.com/content/40/5/318.full SO - Br J Ophthalmol1956 May 01; 40