what is the opposite of dilated pupils

The opposite of dilated pupils is constricted pupils, also known as miosis or myosis. When the muscles of the iris, the colored part of the eye, tighten around the pupil, the pupil becomes small or constricted. This can be caused by many things, including using opioids, having a stroke, or taking certain medications. Abnormal miosis, where the pupils stay small even in dim light, can be a sign that things in the eye are not working the way they should. If you are experiencing abnormal miosis, it is important to see a doctor to determine the underlying cause and receive appropriate treatment.