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Implication of conus on central visual field in glaucoma Hiroyuki Baba 1 , Toshiyuki Ochi 1 , Keiji Yoshikawa 1 , Toyoko Inoue 1 , Youichi Inoue 1 1Eye Div of Olympia Med Clin pp.373-376
Published Date 1988/4/15
DOI https://doi.org/10.11477/mf.1410210333
  • Abstract
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We evaluated the correlation among the size of conus, visual acuity and the central visual field in a total of 861 eyes. The series included primary open angle glaucoma 241 eyes, developmental glaucoma 38 eyes, low tension glaucoma 48 eyes, ischemic optic neuropathy 63 eyes and primary angle closure glaucoma 76 eyes. The size of the conus was graded according to the fluorescein angiogram in each eye. When the width of the conus was less than 1/4DD (disc diameter), the eye was graded as T1. It was graded as T2 or T3 when the width was less ormore than 1/2DD respectively. Tokyo The incidence of impaired visual acuity of less than 0.6 was 13% for T1, 19% for T2, and 34% for T3.

We then evaluated the central vision by autoper-imeter Octopus 201, program No 31. We calculated the average dB for the central visual field within 10ー from the fixating point. The incidence of impair-ed central vision not exceeding 20 dB was 21% for T1, 33% for T2 and 57% for T3. The findings show that the presence of temporal conus in glaucoma and ischemic optic neuropathy suggests the possibility of an early involvement of central visual field and vision.

Rinsho Ganka (Jon J Clin Ophthalmol) 42(4) : 373-376, 1988


Copyright © 1988, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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