Eye dilation usually lasts four to six hours, but it can last longer depending on various factors. Light-colored eyes may stay dilated longer after an exam. After an eye exam, you may receive special ...

The iris is a structure behind the transparent cornea of the eye. It has a circular opening called the pupil that changes size in response to the light level. Your pupils are usually the same size as ...

Pupils are the black circles located in the center of your iris, or the colored part of your eye. The pupil allows light to enter your eye and often changes in size. When your pupils appear larger, ...

Last month, I attended a conference for physicians presented by Dr. Jesse Berry, an associate professor of ophthalmology at USC and the director of the Ocular Oncology and the Retinoblastoma Programs ...

A 3-year-old girl with an unremarkable medical history suddenly developed dilated pupils and trouble walking, according to a case report in JAMA Ophthalmology. The child was brought in to the ...

Allison came home last night complaining that her eyes felt weird and that she was having some trouble focusing. <br><br>I went and looked at her eyes, and noticed that one of her eyes was way dilated ...

Working memory is one of the brain’s executive functions, a skill that allows humans to process information without losing track of what they’re doing. In the short term, working memory allows the ...