[Relation of 2-dimensional papilla morphology to current intraocular pressure]

Optic disc morphometry is a method of quantitatively evaluating the optic nerve. This study was undertaken to examine whether the optic disc morphology changes with a short-term increase in intraocular pressure. In 46 eyes with chronic open-angle glaucoma and 20 normal eyes, optic disc photographs were taken at a baseline pressure ranging between 15 and 20 mm Hg and 1 and 8 s after pressure elevation of 10 and 20 mm Hg, respectively. In the normal and glaucoma eyes the size and form of the optic disc, optic cup, and alpha and beta zones of the parapapillary chorioretinal atrophy did not change significantly with pressure elevation. We conclude that two-dimensional papillomorphometric data are not dependent on a short-term increase in intraocular pressure.