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Abstract #18463 Published in IGR 3-3
Detection of visual field loss with frequency doubling technology in eyes with glaucoma-like discs
Iwasaki M; Hori S; Yoshikawa KFolia Ophthalmologica Japonica / Nihon Ganka Kiyo 2001; 52: 505-509
PURPOSE: To evaluate the existence of early visual field abnormalities with Frequency Doubling Technology (FDT) in eyes with glaucoma-like discs (GLDs). METHODS: Scanning laser tomography with the Heidelberg Retina Tomograph (HRT) and its diagnostic program was used to examine 36 eyes of 36 patients with GLDs in order to determine whether the presence of glaucomatous optic disc cupping was diagnostic of glaucoma. All eyes had normal intraocular pressure and normal results on computerized perimetry. The criteria for abnormality using the C-20 FDT program was the presence of five or more locations of significantly (p < 0.05) abnormal sensitivity in 17 locations examined. RESULTS: GLDs were classified as abnormal in 14 eyes (38.9%) and normal in 22 (61.1%), based on the results of FDT testing. The mean deviation (MD) and pattern standard deviation (PSD) in eyes with abnormal GLDs (MD = -3.2 ± 2.4 dB, PSD = 5.1 ± 1.2 dB) were significantly (p < 0.001) worse compared to deviations in normal eyes (MD = 0.2 ± 1.1 dB, PSD = 3.6 ± 0.6 dB). MD of the upper hemifield area was significantly (p < 0.01) lower than that of the lower hemifield area, especially at a point superior to Mariott's scotoma (p < 0.001). CONCLUSIONS: Testing using FDT can detect visual field abnormalities in patients with GLD. LA: Japanese
Dr M. Iwasaki, Department of Ophthalmology, Tokyo Women's Medical University School of Medicine, 8-1 Kawada-cyo, Shinjyuku-ku, Tokyo 162-8666, Japan
Classification:
6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)
