RT Journal Article SR Electronic T1 BOOK REVIEWS JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 720 OP 720 DO 10.1136/bjo.52.9.720 VO 52 IS 9 YR 1968 UL http://bjo.bmj.com/content/52/9/720.abstract AB