RT Journal Article SR Electronic T1 A SIMPLE DEVICE FOR TESTING DIPLOPIA JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 376 OP 378 DO 10.1136/bjo.29.7.376 VO 29 IS 7 A1 I. C. Michaelson YR 1945 UL http://bjo.bmj.com/content/29/7/376.abstract AB