RT Journal Article SR Electronic T1 MEETING OF THE BRITISH MEDICAL ASSOCIATION, MANCHESTER, JULY 24 and 25, 1929 JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 456 OP 459 DO 10.1136/bjo.13.9.456 VO 13 IS 9 YR 1929 UL http://bjo.bmj.com/content/13/9/456.abstract AB