お題は？「眼鏡を買ったほうがいいですか？」

★遠視は hyperopia と言い，光線が屈折異常 refractive error のため網膜 retina より後ろで像を結ぶことがその原因。老眼はレンズの弾力性低下によるので，近くが見づらいことは遠視と共通だが原因は異なる。

Episode metadata supplied by the publisher feed · Published Dec 21, 2010

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お題は？「眼鏡を買ったほうがいいですか？」

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