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Vogt-Koyanagi-Harada病における48ヶ月のフルフィールド網膜電図(ffERG)は、長期的な研究においてベースラインの網膜機能障害と相関する
Fernanda Maria Silveira Souto1, Ruy Felippe Brito Gonçalves Missaka2, Marcelo Mendes Lavezzo2
1Department of Ophthalmology, Hospital das Clinicas, HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil. fernanda.souto@yahoo.com.br.
Documenta ophthalmologica. Advances in ophthalmology
|January 29, 2026
まとめ
Vogt-Koyanagi-Harada病(VKH)のフルフィールド網膜電図(ffERG)パラメータは、1年以内に改善し、安定化する。持続的な低fERGは、ベースラインの機能低下とサンセットグロー網膜症の発症と相関する。
科学分野:
- 眼科学;神経科学;免疫学
背景:
- Vogt-Koyanagi-Harada(VKH)病は、ぶどう膜を侵す全身性炎症性疾患である。;フルフィールド網膜電図(ffERG)は、様々な眼疾患における網膜機能を評価するための主要な診断ツールである。;VKH病における長期的な機能回復を理解することは、患者管理にとって極めて重要である。
研究 の 目的:
- 急性Vogt-Koyanagi-Harada(VKH)病患者のフルフィールド網膜電図(ffERG)パラメータを評価する。;4年間の追跡期間におけるffERGパラメータの臨床的関連性を評価する。;ffERGの回復とサンセットグロー網膜症(SGF)の発症との関係を調査する。
主な方法:
- 急性VKH病患者21名を対象とした後向きコホート研究。;治療開始後、ベースライン、6ヶ月、12ヶ月、48ヶ月でffERG評価を実施。;48ヶ月時点で正常なffERG(グループ1)と低ERG(グループ2)に患者を分類した。
主要な成果:
- ベースラインから12ヶ月にかけて全てのffERGパラメータが有意に改善し、その後安定化した。;グループ2(低ERG)は、回復傾向が類似しているにもかかわらず、グループ1と比較して一貫して振幅が低下した。;サンセットグロー網膜症(SGF)は、12ヶ月においてグループ2(60.7%)対グループ1(21.4%)で有意に多かった。
結論:
- VKH病における網膜機能は、最初の1年以内に改善し、その後、治療法に関係なく安定する。;48ヶ月時点での持続的な低ERGは、ベースラインの網膜機能が低いことを示している。;低ERGは、SGFを発症する可能性の増加と関連している。
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