High-pass resolution perimetryと視野指標，乳頭辺縁面積との相関

Correlation of high-pass resolution perimetry with visual field indices and optic disc rim area

　High-pass resolution perimetry （HRP）により測定された視機能指標である“functionalchannels（FC）”と従来の自動視野計による視野指標，および乳頭辺縁面積との相関を検討した。18例26眼の正常眼圧緑内障において，FC　はHumphrey自動視野のMean Deviation，Roden-stock Optic Nerve Head Analyzerで測定した乳頭辺縁面積と統計学的に有意に相関した。Aul-hornの視野病期分類（Greve変法）でⅡ期以前の14眼においては，FCと辺縁面積の間に有意な正の相関を認めたが，視野視標との相関はみられなかった。

　これらの結果より，HRPは早期正常眼圧緑内障における網膜神経線維量を推定することのできる新しい技法として検討に値すると思われた。

We evaluated 26 eyes with normal-tension glau-coma regarding high-pass resolution perimetry (HRP), visual field indices by Humphrey automat-ed perimetry and optic disc rim area. Functional channels (FC), which is the visual function index estimated by HRP, was significantly correlated with the mean deviation and the corrected patterns standard deviation of the Humphrey visual field.There was also a significant correlation between FC and the optic disc rim area measured by a Rodenstock analyzer. In 14 early-stage eyes, FC was significantly correlated with the rim area but not with the Humphrey visual field indices. The findings suggest the potential usefulness of HRP in evaluating the amount of functioning retinal nerve fibers in normal-tension glaucoma in its early stage.