RT Journal Article SR Electronic T1 Vitrectomy JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 381 OP 382 DO 10.1136/bjo.64.5.381-c VO 64 IS 5 A1 J. J. Kanski YR 1980 UL http://bjo.bmj.com/content/64/5/381.4.abstract AB