Miosis of the eye refers to having small or constricted pupils. The condition is also called pupillary miosis. Pupils are the black circles in the middle of your eyes. With miosis, the muscles of your iris (the colored part of your eye) tighten around your pupil. These muscles control whether your pupils are large or small.

Feb 7, 2025 · When your pupil shrinks (constricts), it's called miosis. If your pupils stay small even in dim light, it can be a sign that things in your eye aren't working the way they should.

Jan 27, 2021 · Miosis occurs when the pupil of your eye shrinks and becomes very small, like a pinpoint. It may be caused by medications, injury, illness and even aging.

Feb 21, 2019 · Miosis means excessive constriction (shrinking) of your pupil. In miosis, the diameter of the pupil is less than 2 millimeters (mm), or just over 1/16th of an inch.

Miosis from bright light pointed directly at the eye. Pupil measured 2.3 mm in diameter. Miosis, or myosis (from Ancient Greek μύειν (múein) 'to close the eyes'), is excessive constriction of the pupil. [1][2][3][4] The opposite condition, mydriasis, is the dilation of the pupil.

Sep 18, 2024 · Pinpoint pupil, medically termed miosis, refers to the black center of the eye appearing smaller than normal regardless of lighting changes. The symptoms that accompany pinpoint pupils will vary based on the underlying cause. They include eye …

Oct 9, 2024 · If your pupil is abnormally small (less than 2mm) in diameter and unresponsive to light, it’s called a pinpoint pupil. This condition is also referred to as miosis or myosis. Miosis can affect one (unilateral) or both eyes (bilateral). Miosis …

Feb 15, 2023 · Miosis is when the pupils at the center of the eye constrict down to less than 2 millimeters instead of expanding and contracting with the light as needed.

Oct 28, 2022 · Miosis refers to when pupils constrict more than necessary. Your pupils may shrink too much or unnecessarily due to a health condition, substance intake, or the aging process. This is miosis, or the atypical constricting of the pupils. Keep reading to …

May 3, 2022 · When a pupil stays shrunken even when not in bright light, a condition of miosis, that indicates an underlying problem. Doctors consider pupils abnormal if they do not dilate in the dark and if they do not constrict in brightly lit conditions.