Relating to both the lens capsule and the pupil (the opening in the iris) of the eye.
From capsulo- plus pupillary (from Latin pupilla, 'little doll,' because you can see a tiny reflection in someone's pupil). This anatomical term describes relationships in anterior eye structures.
The capsulopupillary axis represents how the pupil's opening and the lens capsule work together—when light hits your pupil, it needs to pass through and be focused by structures connected through the capsule, coordinating every element of vision.
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