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Triangular syndrome following blunt trauma or secondary retinal detachment Kyoichi Takahashi 1 , Kanemitsu Muraoka 1 , Kenji Tokui 1 , Takayuki Nakashizuka 1 , Noriko Suto 1 1Dept of Ophthalmol,Gunma Univ Sch of Med pp.859-867
Published Date 1991/5/15
DOI https://doi.org/10.11477/mf.1410900669
  • Abstract
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We evaluated 42 eyes, 39 cases, which manifested triangle-shaped choroidal alterations by fluorescein angiography. The series included 14 eyes, 14 cases, with a history of blunt ocular trauma. No distinct etiological factors could be identified in the remain-ing 28 eyes, 25 cases.

In posttraumatic group, the triangular retino-choroidal atrophy was present radiating from the posterior fundus towards the periphery. Its distribu-tion simulated the choroidal arterial pattern.

In idiopathic group, the retinochoroidal atrophy was invariably directed towards the inferior periph-ery. Its size and shape was variable. Occasionally, the atrophic area involved the whole inferior hemi-sphere of the fundus. Its distribution was indepen-dent of the choroidal vascular pattern. Fluorescein angiography showed leakage of dye in the posterior fundus in 25 eyes, 86%. These findings seemed to indicate that the triangular retinochoroidal atrophy was due to persistent secondary retinal detachment.

It is concluded that there are two basic types of so-called triangular syndrome. It may result from blunt ocular trauma and assume a classic fundus appearance. It may also develop consequent to retinal detachment of exudative nature.


Copyright © 1991, 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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