PURPOSE To quantitatively evaluate the change in the optic disc topographic parameters associated with reduction in the intraocular pressure (IOP) after trabeculectomy in adult patients with glaucoma. METHODS A series of 22 patients (mean age: 45.7+/-15.1 years) with several types of glaucoma were examined for various parameters of optic disc before and after trabeculectomy. Cup area, cup-to-...

This paper describes two complementary methods for computer analysis of the optic disc in glaucoma. The objective of both techniques is to detect and monitor changes in the optic disc through the use of digital image processing techniques that allow user intervention. In the first method, optic disc photographs from successive years are digitized, scaled and registered (aligned) with each other...

Objective This study determined the risk factors for primary open-angle glaucoma (POAG) among Filipinos. Methods This is a case-control study of POAG cases and controls recruited from the University of the Philippines-Philippine General Hospital (UP-PGH). All underwent a comprehensive eye examination consisting of best-corrected visual acuity, applanation tonometry, slitlamp biomicroscopy, goni...

BACKGROUND The purpose of this study was to investigate the correlations between microcirculation in the optic disc, average peripapillary retinal nerve fiber layer thickness cupping parameters, and visual field defects in glaucoma patients with the generalized enlargement disc type. METHODS A total of 38 eyes from 38 glaucoma patients with the generalized enlargement disc type were included....

Observations have been made of the horizontal extent of cupping of the optic nerve head in both normal and glaucomatous eyes in an attempt to determine the factors which influence cup size in the normal eye (Armaly, I967; Armaly and Sayegh, I969; Armaly, 1969a, b; Tomlinson and Phillips, I969; Jonsas, I972) and to establish differential diagnostic criteria for glaucomatous excavation (Armaly, I...

New information technologies provide a possibility of collecting a large amount of fundus images into databases. It allows us to use automated processing and classification of images for clinical decisions. Automated localization and parameterization of the optic nerve disc is particularly important in making a diagnosis of glaucoma, because the main symptoms in these cases are relations betwee...

The universal definition of glaucoma is that it is an optic neuropathy with assorted etiology, which disturbs the optic nerve head, thereby resulting in visual loss and permanent impairment of visual function [2]. On the other hand, primary open angle glaucoma is an optic neuropathy that is commonly associated with increased intraocular pressure. High intraocular pressure leads to retinal gangl...