移除由于混浊的瑕疵而变暗的晶体，通常叫做白内障，然后用人工晶体替换它们，这种技术已经存在超过半个世纪。

The ability to remove lenses darkened by cloudy imperfections, known as cataracts, and replace them with artificial lenses, is more than half a century old.

youdao

移除由于混浊的瑕疵而变暗的晶体，通常叫做白内障，然后用人工晶体替换它们，这种技术已经存在超过半个世纪。

The ability to remove lenses darkened by cloudy imperfections, known as cataracts, and replace them with artificial lenses, is more than half a century old.

youdao