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Japanese

Retinal nerve fiber layer defects secondary to cotton-wool spots and retinal photocoagulation Etsuo Chihara 1 , Hideo Torii 1 , Atsushi Sawada 1 1Dept of Ophthalmol, Miyazaki Med Coll pp.335-338
Published Date 1989/3/15
DOI https://doi.org/10.11477/mf.1410210661
  • Abstract
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We evaluated retinal nerve fiber layer defects (NFLD) in 8 eyes with cotton-wool spots, in 6 eyes with branch retinal vein occlusion treated by photocoagulation, and in 18 eyes with diabetic retinopathy treated by panretinal photocoagula-tion. Either xenon, argon laser or dye laser (577 to 590 nm in wavelength) was used for retinal photocoagulation. The eyes were studied by static perimetry and by fundus photography using red -free light.

NFLDs secondary to solitary cotton-wool spots were small, with threshold changes less than 5dB in depth and 5 degrees in width. These changes could be detected by program F of Octopus perimeter and not by Goldmann kinetic perimeter. The NFLDs caused visual dysfunctions in eyes with diabetic retinopathy.

NFLDs developed after excessive photocoagula-tion with xenon or argon laser. Adequate coagula-tion with dye laser or argon blue laser caused very mild NFLDs. Such weak damages to the nerve fiber layer appeared to be ineffective to suppress vasoformative factor from the neurosensory retina.


Copyright © 1989, 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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