RT Journal Article SR Electronic T1 Excimer Laser Surgery for Corneal Disorders JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 885 OP 885 DO 10.1136/bjo.83.7.885b VO 83 IS 7 A1 MICHAEL O’KEEFE YR 1999 UL http://bjo.bmj.com/content/83/7/885.3.abstract AB