RT Journal Article SR Electronic T1 Keratoplasty Clamp JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 189 OP 189 DO 10.1136/bjo.38.3.189 VO 38 IS 3 A1 P. Sivasubramaniam YR 1954 UL http://bjo.bmj.com/content/38/3/189.abstract AB