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  • Title: [Serous macular detachment combined with branch retinal vein occlusion].
    Author: Takahashi K, Kashima T, Kishi S.
    Journal: Nippon Ganka Gakkai Zasshi; 2005 Jun; 109(6):362-7. PubMed ID: 16047944.
    Abstract:
    PURPOSE: To report frequency, clinical characteristics, treatment, and the complications of branch retinal vein occlusion (BRVO) with serous macular detachment. PATIENTS AND METHODS: We retrospectively studied 22 eyes of 22 patients in 111 eyes with acute BRVO, whose eyes had serous macular detachment that was detected by optical coherence tomography (OCT). Fluorescein angiography was conducted in 19 of the 22 eyes. Fourteen of the 22 eyes underwent scatter laser photocoagulation of the BRVO area. We observed serial OCT findings before and after treatment. RESULTS: Approximately 20% of the BRVO eyes had serous macular detachment. The superotemporal vein was occluded in 15 eyes and the inferotemporal vein was involved in 7 eyes. Four eyes were ischemic and 15 eyes were not ischemic. Extensive dye leakage was observed in the BRVO area in all examined eyes (19 eyes). The occlusion area of perifoveal capillary network ranged from 5 to 60%, with an average of 40%. OCT demonstrated pure serous macular detachment in 13 eyes and the remaining 9 eyes had both serous macular detachment and cystoid macular edema(CME). The occlusion area of perifoveal capillaries in these 9 eyes was more than 20%. Serous macular detachment was resolved in 11 of 14 eyes (80%) 6 months after laser treatment. The average period for resolution of macular detachment was 3.4 months after treatment. Visual acuity was improved more than 2 lines in 8 of the treated 11 eyes (73%). Hard exudates appeared in the posterior fundus in 13 of 14 treated eyes (93%) and in 16 of the total of 22 eyes (73%) in the follow-up period. Massive macular hard exudates and ensuing macular atrophy resulted in poor visual outcome. CONCLUSIONS: Serous macular detachment is one of the patterns of macular edema in BRVO. OCT is an essential tool to detect it. Leakage from the entire BRVO area seems to travel via subretinal space by gravity or other factors and may form serous detachment in the macular area. Laser photocoagulation is indicated for early resolution of serous macular detachment. The major complication of serous detachment is the deposit of macular hard exudates, which may result in poor visual outcome.
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