PT - JOURNAL ARTICLE ED - , AID - 10.1136/bjo.82.4.341 DP - 1998 Apr 01 TA - British Journal of Ophthalmology PG - 341--341 VI - 82 IP - 4 4099 - http://bjo.bmj.com/content/82/4/341.short 4100 - http://bjo.bmj.com/content/82/4/341.full SO - Br J Ophthalmol1998 Apr 01; 82