RT Journal Article SR Electronic T1 Books Received JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 768 OP 768 DO 10.1136/bjo.37.12.768-a VO 37 IS 12 YR 1953 UL http://bjo.bmj.com/content/37/12/768.2.abstract AB