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Dye laser photocoagulation for retinal branch vein occlusion Michiko Sakamoto 1 , Takayuki Tanaka 1 , Kenji Tokui 1 , Keiko Tobe 1 , Keisuke Mori 1 1Dept of Ophthalmol, Gunma Univ Sch of Med pp.741-747
Published Date 1989/5/15
DOI https://doi.org/10.11477/mf.1410210773
  • Abstract
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We conducted a prospective study of dye laser photocoagulation for 23 eyes with branch retinal vein occlusion in its active stage. We used wave-length of 610 nm. The cases were followed up from 3 to 9 months, average 5.1 months. Presence of macular edema threatening visual acuity was a major criterium for eligibility in the study.

Ophthalmoscopically, an early resolution of hemo-rrhage resulted in 22 eyes (96%). Out of 15 eyes with cystoid macular edema (CME), 13 eyes re-sponded by resolution or reduction in CME. Out of 8 eyes with noncystoid macular edema, 7 eyes responded by reduction in the edema. Visual acuity improved by 2 lines or more in 10 eyes, remainedunchanged in 9, and deteriorated by 2 lines or more in 3.

Retinal neovascularization developed 9 months later in 1 eye. Nerve fiber layer defect (NFLD) corresponding to the sites of photocoagulation in 5 eyes. No other complications were observed throughout the follow up period.

The findings indicate that photocoagulation using 610 nm dye laser is beneficial to branch retinal vein occlusion in its active stage. Early resolution of macular edema and retinal hemor-rhage can be effected by the treatment. This wave-length seemed to be indicated because the laser is transmitted through the hemorrhagic layer and is sufficiently absorbed by the retinal pigmemt epith-elium.


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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