PT - JOURNAL ARTICLE ED - , AID - 10.1136/bjo.85.2.252 DP - 2001 Feb 01 TA - British Journal of Ophthalmology PG - 252--252 VI - 85 IP - 2 4099 - http://bjo.bmj.com/content/85/2/252.short 4100 - http://bjo.bmj.com/content/85/2/252.full SO - Br J Ophthalmol2001 Feb 01; 85