Iris and Pupil 虹膜和瞳孔
The theory is that a white sclera surrounding a darker iris and pupil helps people work out where everyone else is looking.
该理论认为，围绕在深色虹膜和瞳孔周围的白色巩膜帮助人们判断出其他人在看哪里。
LASIK eye surgery changes the shape of your cornea—the transparent membrane that arcs over your pupil and the colored part of your eye (iris).
LASIK 眼科手术改变了你的角膜的形状——角膜是覆盖在你的瞳孔和你的眼睛的有色部分（虹膜）上的弧形透明膜。
Such treatment can be effective to separate iris, pupil, and sclera.
通过这样处理可有效的将虹膜与瞳孔、巩膜分离。
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