RT Journal Article
SR Electronic
T1 Influence of pupil size on measurements made with the Lens Opacity Meter 701.
JF British Journal of Ophthalmology
JO Br J Ophthalmol
FD BMJ Publishing Group Ltd.
SP 526
OP 527
DO 10.1136/bjo.74.9.526
VO 74
IS 9
A1 M P Clarke
A1 J C Pearson
A1 S A Vernon
A1 J C Matthews
YR 1990
UL http://bjo.bmj.com/content/74/9/526.abstract
AB The Lens Opacity Meter 701 (Interzeag, Switzerland) is a recently developed instrument for assessing cataract. It measures the degree of scatter of a red light beam by the lens. Fifty patients prior to cataract surgery had measurements made before and after dilatation of the pupil. Inconsistent results were found at pupil diameters of less than 4 mm. It is postulated that this was due to absorption of scattered light by the iris.