新型単式コンダクトレンズ（ブーメラン型）

A Boomerang-Shaped Contact Lens for Presbyopia

I．緒言

　先に私は，老視用二焦点レンズとして，装用に便利な，子レンズを親レンズの上，前面に載せて使用する，新方式のレンズ^1）を発表したが，今回は新型の単式レンズを試作したので，御報告する。

A description is presented of a newly inve-nted contact lens for presbyopic eyes. The contact lens is shaped like a boomerang and, when in use, is to lie with the concave side directed upwards. when the wearer looks at distant objects, the contact lens does not aff-ect vision as it lies outside of the pupil. Wh-en in reading, the wearer is expected to look through the contact lens with his gaze direc-ted downwards. This newly developed conta-ct lens promises to be practical through lack of irritation and its adaptability to the eye as evinced by clinical tests in volunteers.