Species 8472 eye

The pupil of Species 8472

For the educational term, please see student.

A pupil is the dark area of the eye surrounded by the iris. The function of the pupil is to control the amount of light allowed to pass into the eye.

The dilation of one's pupils could be an indicator of dishonesty. (TNG: "Up The Long Ladder") Talaxians and Humans both experienced pupil dilation when attracted romantically to others. (VOY: "Parturition", "Revulsion", "Unimatrix Zero") Some species, such as the Myleans, had naturally dilated pupils, which made them intolerant of bright light. (VOY: "Scientific Method")

Alternately, the contraction of one's pupils could be an indicator of illness. In 2370, Doctor Julian Bashir noted that Elim Garak's pupils were contracted and his skin was clammy when the Cardassian was experiencing headaches. (DS9: "The Wire")

The Doctor noted that Seven of Nine's pupils dilate by nearly a millimeter and her blood flow increases to her facial capillaries when she mentioned Axum. (VOY: "Unimatrix Zero")

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