RT Journal Article SR Electronic T1 At a glance JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP i OP i DO 10.1136/bjo.2009.169433 VO 93 IS 9 A2 Harminder S Dua A2 Arun D Singh YR 2009 UL http://bjo.bmj.com/content/93/9/i.abstract AB