presbyopia
noun [ U ] medical specialized uk/ˌprez.biˈəʊ.pi.ə/ us/ˌprez.biˈoʊ.pi.ə/
老花眼，老年远视
a condition in which someone finds it difficult to focus the eyes on things that are near, especially when there is not much light, which usually gets worse with age
Presbyopia develops as the eyes' lenses lose their ability to focus on near objects.
Then presbyopia set in, and she found it difficult to see up close.
See also: hyperopia
- More examples
- This technique can restore patient’s ability to deal with near vision tasks which has been lost due to presbyopia .
- Despite extensive research on the subject, little has changed in the basic understanding of presbyopia in 150 years.
- A third factor contributing to presbyopia lies in the internal structure of the lens itself.