RT Journal Article SR Electronic T1 Variant CJD and tonometry JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 597 OP 598 VO 88 IS 4 A1 J S Mehta A1 R J Osborne A1 P A Bloom YR 2004 UL http://bjo.bmj.com/content/88/4/597.abstract AB