presbyopic

Cixin Liuの "The Three-Body Problem" を読んでいます。Mozi and Fiery Flamesの章からです。

Ye was alone at home. When Wang entered, she was sitting on the sofa reading. Wang noticed that her eyes were both myopic and presbyopic, and she had to switch glasses both when she read and when she looked at something far away. She was very happy to see Wang, and said that he looked much better than the last time he had come to see her.

"myopic" は近視を意味することを知っていますが、"presbyopic" の単語は知りませんでした。　私は "myopic" で、歳と共に老視も出てきたので、上記のYeさんと似たような状況なので、（バイフォーカルの眼鏡を使っているので、眼鏡を替えることはありませんが） "presbyopic" は老視の意味だと思いますが、辞書で確認します。

・Oxford English Dictionary: Farsightedness caused by loss of elasticity of the lens of the eye, occurring typically in middle and old age.: ‘A number of changes occur in the eye as you grow older, but most experts agree that a hardening of your lens causes presbyopia.’
・Collins Dictionary: a progressively diminishing ability of the eye to focus, noticeable from middle to old age, caused by loss of elasticity of the crystalline lens:
・Dictionary.com: farsightedness due to ciliary muscle weakness and loss of elasticity in the crystalline lens.: Still another defect of vision is known as presbyopia or farsightedness due to old age.

"presbyopic/presbyopia" は自分の事でもあるので覚えましょう。