N-UNCOUNT
(由于拍摄时使用闪光灯等原因而在照片中呈现的)红眼
In photography, redeye is the unwanted effect that you sometimes get in photographs of people or animals where their eyes appear red because of the reflection of a camera flash or other light.
例句
The camera incorporates a redeye reduction facility.
这个相机有防红眼功能。