Iatrogenically induced mydriasis

Iatrogenically Induced Mydriasis: Overview and Treatment

Iatrogenically induced mydriasis is an eye condition caused by an intervention that stimulates over-dilation of the pupil. This condition is also known as mydriasis caused by a doctor, and it can cause vision problems if not managed properly. Common culprits of this condition are certain types of medications, contact lenses, laser eye surgeries, and eye injections.

When the pupil becomes too wide, it tends to cause blurriness and can interfere with an individual’s ability to focus. Additionally, when the pupil is widened it can also become sensitive to light and require the person to use sunglasses at all times. In many cases, the condition can be managed with prescription eye drops or glasses, but some cases may require more aggressive treatment.


The most noticeable symptom of iatrogenic mydriasis is excessive dilation of the pupil. While this can occur in both eyes, it is often worse in one eye. Other symptoms may include:

  • Blurry vision
  • Difficulty focusing
  • Light sensitivity
  • Double vision
  • Headache


Treatment for iatrogenic mydriasis depends on the underlying cause. In some cases, prescription eye drops or glasses may be enough to reduce the pupil size and allow the eye to return to normal. In more serious cases, however, surgery may be required.

Patients who have undergone laser eye surgeries should also take extra precautions to prevent the condition from occurring. Proper post-operation care, including avoiding exposure to bright light and wearing protective eyewear, can help prevent iatrogenic mydriasis.