The endurance test method for an optical product includes: a scratch resistance test process for pressing a scratch part to an optical product in the state that a prescribed load is imposed and performing relative exercise of the optical product and the scratch part; and a synthetic sweat test method for immersing the optical product after the scratch resistance test process in synthetic sweat for a prescribed period of time. 光学製品の耐久性試験方法において、光学製品に擦傷部を所定の荷重がかかる状態で押し付け、光学製品と擦傷部を相対運動させる耐擦傷性試験工程と、当該耐擦傷性試験工程後の前記光学製品を、所定時間人工汗に浸漬させる人工汗試験工程を備えさせる。 - 特許庁