Effect of pupillary dilation on intraocular pressure.

ABSTRACT

A prospective study of the effect of papillary dilation on intraocular pressure was carried out in the Outpatient Section, Department of Ophthalmology, Siriraj Hospital. There were a total 100 cases, 43 male (43%), 57 female (57%) with a total of 200 eyes. Ages ranged from 15-81 years, mean 56.13 years. The mean of the intraocular pressure before papillary dilation was equal to = 15.42 + 2.87 mm Hg, while the mean of the intraocular pressure after papillary dilation was = 16.07 + 2.94 mm Hg. There was no change in the intraocular pressure in 48 eyes (24%). In the increased intraocular pressure group, a range of 2.0-3.9 mm Hg was found in 43 eyes (53.09) and a range of 2.0-3.9 mm Hg, in 14 eyes (29.17%). The change in intraocular pressure after papillary dilation was statistically significant (p < 0.001).