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Abstract #27804 Published in IGR 13-1
Hemispherical focal macular photopic negative response and macular inner retinal thickness in open-angle glaucoma
Nakamura H; Hangai M; Mori S; Hirose F; Yoshimura NAmerican Journal of Ophthalmology 2011; 151: 494-506
Purpose: To investigate in open-angle glaucoma the focal macular photopic negative response and spectral-domain optical coherence tomography measurements of retinal thicknesses in the superior and inferior macula. Design: Comparative case series. Methods: We studied 63 eyes of 63 patients with open-angle glaucoma and 41 normal eyes of 41 volunteers. Photopic negative responses were recorded using a spotlight (diameter of 15 degrees of circle), projected onto the whole or superior or inferior macula. Ganglion cell complex (nerve fiber + ganglion cell + inner plexiform layers) thickness was measured using spectral-domain optical coherence tomography. Results: Mean photopic negative response amplitude over the entire macula was significantly (P < .001) decreased compared with that of controls in eyes with early (n = 24; to 62.1%), moderate (n = 21; to 57.2%), and severe (n = 18; to 49.3%) open-angle glaucoma, but not significantly different among eyes with various stages of glaucoma. Mean ganglion cell complex thickness was significantly (P < .001) decreased compared with that of controls in eyes with early (86.0%), moderate (78.3%), and severe (71.2%) glaucoma, and thinning correlated positively with glaucoma severity (P < .001). Mean photopic negative response amplitude correlated significantly (P < .001) with ganglion cell complex thickness over the whole, superior, and inferior macular areas (r = 0.57 to 0.74). In 16 eyes without visual field defect in the inferior hemifield, mean photopic negative response amplitude was 56.5% of normal (P < .001), and mean ganglion cell complex thickness in the superior macula was 92.1% of normal (P = .004). Conclusions: Focal macular photopic negative response amplitude correlates with ganglion cell complex thickness, but decreases more abruptly in early glaucoma compared with ganglion cell complex thickness. (copyright) 2011 Elsevier Inc.
M. Hangai. Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan. hangai@kuhp.kyoto-u.ac.jp
Classification:
6.9.2.2 Posterior (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis > 6.9.2 Optical coherence tomography)
6.30 Other (Part of: 6 Clinical examination methods)
