PT - JOURNAL ARTICLE ED - BMJ Publishing Group Ltd.BMA House, Tavistock Square, London, WC1H 9JR TI - Corrigendum AID - 10.1136/bjo.55.12.864-a DP - 1971 Dec 01 TA - British Journal of Ophthalmology PG - 864--864 VI - 55 IP - 12 4099 - http://bjo.bmj.com/content/55/12/864.2.short 4100 - http://bjo.bmj.com/content/55/12/864.2.full SO - Br J Ophthalmol1971 Dec 01; 55