RT Journal Article SR Electronic T1 On the precision and reliability of IOP measurements. JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 586 OP 587 DO 10.1136/bjo.80.7.586 VO 80 IS 7 A1 Gilchrist, J. M. YR 1996 UL http://bjo.bmj.com/content/80/7/586.abstract AB