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39眼49個の脈絡膜新生血管が明らかでない網膜色素上皮剥離(PED)をインドシアニングリーン螢光造影(IA)所見によって,過螢光,不規則過螢光,不規則低螢光の3型に分類し、6〜96か月(平均50か月)経過観察した。過螢光を示した17眼25個のPED中5個では、PEDは1.5〜2倍に拡大したが,それ以外は不変,萎縮,あるいは消失した。不規則過螢光を示した8眼8個では拡大はみられず,不変,萎縮,あるいは消失のみであった。不規則低螢光を示した15眼16個では,1眼で脈絡膜新生血管の発生,1眼で放射状脈絡膜ひだ,2眼でmicrOripがみられた。以上からIAで不規則低螢光を示すPEDは厳重な経過観察が必要である。
We performed indocyanine green (ICG) angiography in 39 eyes with 49 lesions of detachment of retinal pigment epithelium (PED) without choroidal neovascularization. The cases were followed up for 6 to 96 months, average 50 months. Twenty-five lesions showed hyperfluorescence. During the follow up, the PED in 5 lesions enlarged to 1.5 to 2 times in size. Other lesions either remained stationary, became atrophic or disap-peared. Eight lesions showed irregular hyperfuorescence. These lesions either remained stationary, became atrophic or disappeared. Sixteen lesions showed irregular hypofluorescence. One lesion developed choroidal neovascularization, another developed choroidal folds and two lesions developed microrips. The findings show that close observation is indicated for eyes with PEDs which show irregular hypofluorescence by ICG angiography.
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