Mydriasis is the dilation of the pupil, usually having a non-physiological cause, [3] or sometimes a physiological pupillary response. [4] Non-physiological causes of mydriasis include disease, trauma, or the use of certain types of drugs. It may also be of unknown cause.

Dilated pupils (mydriasis) are when the black center of your eyes are larger than normal. The condition may be caused by dilating eye drops from an eye exam, the side effects from a drug/medication or traumatic injury.

2024年10月22日 · Mydriasis is when you have dilated pupils that don’t return to normal size in bright light. Many things can cause mydriasis, including serious problems like brain trauma. Less-serious causes of mydriasis include medication side effects and increased oxytocin.

2017年4月21日 · Mydriasis can be a result of many different causes. It’s important to see your optometrist or doctor if your dilated pupils persist.

2024年7月1日 · Sometimes, pupils can dilate without any change in light. The medical term for this is mydriasis. Medicines, injuries, and diseases can all cause this eye condition. Here's a closer look at some...

2023年5月5日 · Mydriatics, or dilating eye drops, act directly on the iris muscles that change pupil shape. These are used by ophthalmologists as part of an eye exam or before eye surgery. Mydriatics may cause temporary sensitivity to bright light, …

2025年1月22日 · What Is Mydriasis (Dilated Pupils)? Mydriasis occurs when the pupil remains dilated (widened) and doesn't respond to light changes in an environment. It can happen due to an injury, medications, or psychological factors.

2023年3月28日 · Mydriasis is a medical condition characterized by the abnormal and prolonged dilation of the pupil. The pupil, which is the dark, circular opening in the center of the iris, regulates the amount of light entering the eye.

2023年7月10日 · When someone’s pupils dilate in an unusual way, it is called mydriasis. This may be caused by an injury, psychological factors, or when someone takes certain drugs or medications. Doctors...

2025年3月4日 · Mydriasis occurs when an individual’s pupils (the black opening in the center of the eye that regulates light entry), become dilated, or larger. Although this occurs as a normal response to light, mydriasis may also occur as a result of other, less common, underlying causes.