CORRELATION BETWEEN THE OPTIC DISC AND RESULTS OBTAINED WITH CONVENTIONAL, HIGH-PASS RESOLUTION AND PATTERN-DISCRIMINATION PERIMETRY IN GLAUCOMA

The purpose of this study was to determine whether results obtained wi th two new techniques, high-pass resolution perimetry and pattern disc rimination perimetry, correlated better to the appearance of the optic disc than results obtained with conventional automated perimetry in p atients with open-angle glaucoma. Our sample consisted of 28 eyes of 2 8 patients with early glaucomatous field damage who are part of a pros pective follow-up study. We used the second of two sets of baseline pe rimetric examinations separated by 1 week in the analysis. Neuroretina l rim area was calculated by planimetry of stereophotographs of the di sc and was correlated to the visual field sensitivity measured with ea ch of the techniques. We found a poor correlation between the disc and field measurements (correlation coefficients: -0.048 for conventional perimetry, 0.111 for high-pass resolution perimetry and -0.315 for pa ttern discrimination perimetry). Although the correlation appeared to be higher with the newer techniques, the differences were not statisti cally significant.