RT Journal Article SR Electronic T1 Deep lamellar keratoplasty—an alternative to penetrating keratoplasty JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 178 OP 179 DO 10.1136/bjo.81.3.178 VO 81 IS 3 A1 RAJESH K AGGARWAL YR 1997 UL http://bjo.bmj.com/content/81/3/178.abstract AB