Pupils are the dark-colored openings at the center of your eyes that let light in. Doctors can look at your pupils for clues about your health. The size of your pupils and how they react to light can ...

You look in the mirror and notice that the dark circles in the middle of your eyes are bigger than usual. What's going on? Those dark circles are your pupils, the openings that let light enter your ...

Medications, trauma, and medical conditions can lead to abnormally small pupils (miosis). In miosis, the pupil is smaller than it should be, even in darkened conditions when it would typically expand ...

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 ...

Eye dilation refers to a widening of the pupils. When doctors dilate the pupils during an eye exam, it typically lasts between 4 and 24 hours. Doctors sometimes use eye dilation drops to dilate a ...

The size of your pupils varies throughout the day, but most people’s pupils fall within a particular size range. We’ll look at when and why your pupils change size. First, the range of “normal” pupil ...

Mydriasis is the medical term for an unusual dilation or widening of the pupils. There are various causes of this fixed dilation of the pupils. Normally, a person’s pupils dilate when the light is dim ...

Performing phacoemulsification through a small pupil can be challenging because the large lens needs to be fully removed via an opening that is significantly smaller without damaging the delicate iris ...