RT Journal Article SR Electronic T1 At a glance JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 1 OP 1 VO 93 IS 1 A2 Dua, Harminder S A2 Singh, Arun D YR 2009 UL http://bjo.bmj.com/content/93/1/1.2.abstract AB