RT Journal Article SR Electronic T1 Optometry in Ontario JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 122 OP 123 DO 10.1136/bjo.3.3.122 VO 3 IS 3 YR 1919 UL http://bjo.bmj.com/content/3/3/122.abstract AB