RT Journal Article SR Electronic T1 Ocular blood flow measurement. JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 939 OP 945 DO 10.1136/bjo.78.12.939 VO 78 IS 12 A1 T H Williamson A1 A Harris YR 1994 UL http://bjo.bmj.com/content/78/12/939.abstract AB