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What is the function of the pupil of the eye?

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There's another common situation when the pupil of the eye changes color — when someone takes your photo using the camera's flash function. Depending on your direction of gaze when the photo is taken, your pupils might appear bright red. read more

The primary function of the human pupil is to regulate the amount of light that enters the eye. When the pupil is smaller, less light enters the eye in bright environments. The pupil gets larger as light levels decrease to let more light into the eye. read more

The pupil of the eye is the black circle in the center of the iris. The iris is the colored ring in the eye with a color and structure unique to each person. From the outside of the eye, light passes through the clear lens, then through the pupil. read more

The pupil is the opening in the centre of the iris. The size of the pupil determines the amount of light that enters the eye. Depending on the brightness of the light that falls on the eye, the pupil will get larger (expand) or smaller (contract). read more

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