If your pupils have been unequal for a long time and you have no other vision problems, you don't need to worry. Some birth defects of the iris can cause the pupil to have an irregular ...

With the neurologic framework for the pupil’s responses now laid, we will discuss examination and abnormalities of the pupillary responses. A normal pupillary exam using a swinging flashlight ...

To investigate and correlate the frequency and types of pupil abnormalities that are associated with hereditary peripheral neuropathy in a large cohort of patients prospectively examined.

Contact a doctor immediately if the pupils change suddenly or with other symptoms, such as drooping or other abnormalities. Medical News Today has strict sourcing guidelines and relies on peer ...

This may be caused by: Injury to the iris tissue Adie’s tonic pupil syndrome Abnormality of the third cranial nerve An abnormally small pupil, known as a miotic pupil, may occur when the eye ...

The black circle in the center of your eye is your pupil. It changes size thousands of times a day. When you're in dim light, it gets bigger to let more light in. When you're in bright light ...

Time takes its toll on the eyes. Now a funky, Hitchcockian video of 64 eyeballs, all rolling and blinking in different directions, is providing a novel visual of one way in which eyes age.

Researchers were able observe eye movements during sleep over a course of several hours for the first time. Pupil size also fluctuates constantly during sleep, and is linked to the level of brain ...

Researchers have found the pupil is key to understanding how, and when, the brain forms strong, long-lasting memories. Cornell University researchers have found the pupil is key to understanding ...