RT Journal Article SR Electronic T1 Visual impairment in children. JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 624 OP 625 DO 10.1136/bjo.79.7.624 VO 79 IS 7 A1 J Keeffe A1 H R Taylor YR 1995 UL http://bjo.bmj.com/content/79/7/624.abstract AB