PT - JOURNAL ARTICLE ED - , TI - ABSTRACTS AID - 10.1136/bjo.17.10.623 DP - 1933 Oct 01 TA - British Journal of Ophthalmology PG - 623--634 VI - 17 IP - 10 4099 - http://bjo.bmj.com/content/17/10/623.short 4100 - http://bjo.bmj.com/content/17/10/623.full SO - Br J Ophthalmol1933 Oct 01; 17