PT - JOURNAL ARTICLE ED - BMJ Publishing Group Ltd.BMA House, Tavistock Square, London, WC1H 9JR TI - ABSTRACTS AID - 10.1136/bjo.9.9.473 DP - 1925 Sep 01 TA - British Journal of Ophthalmology PG - 473--476 VI - 9 IP - 9 4099 - http://bjo.bmj.com/content/9/9/473.short 4100 - http://bjo.bmj.com/content/9/9/473.full SO - Br J Ophthalmol1925 Sep 01; 9