contact lens
noun [ C ] uk/ˈkɒn.tækt ˌlenz/ us/ˈkɑːn.tækt ˌlenz/ (also contact)
C2 隐形眼镜
a small round curved piece of transparent plastic, worn on the surface of the eye to improve your sight
I usually wear contact lenses, but I sometimes wear glasses when my eyes are tired. 我通常戴隐形眼镜，但有时眼睛疲劳时会戴框架眼镜。