RT Journal Article SR Electronic T1 IMPRESSION TONOMETRY AND THE EFFECT OF EYE VOLUME VARIATION JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 149 OP 163 DO 10.1136/bjo.44.3.149 VO 44 IS 3 A1 Phillips, Calbert I. A1 Quick, Michael C. YR 1960 UL http://bjo.bmj.com/content/44/3/149.abstract AB