Medically reviewed by Johnstone M. Kim, MD Key Takeaways Mydriasis is when the pupil stays wide and doesn't respond to light.Certain medicines, like antihistamines and atropine, can cause ...

Medically reviewed by Andrew Greenberg, MD Key Takeaways Eye dilation usually lasts four to six hours, but it can last longer depending on various factors.Light-colored eyes may stay dilated longer ...

The eyes are often referred to as the “windows to the soul.” In fact, there is a grain of neurobiological truth to this. An international research team from the Universities of Göttingen and Tübingen, ...

The FDA has approved phentolamine ophthalmic solution (Ryzumvi) 0.75% for treatment-induced mydriasis, Viatris and Ocuphire Pharma announced. The approval stipulates use of the eye drops to manage ...

Dilated pupils mean that your pupils appear larger in size. The most common reason for dilated pupils is low light in a dark room since lower light causes your pupils to grow. Dilated pupils are also ...

Credit: Shutterstock. Ryzumvi is a preservation-free eye drop formulation of phentolamine mesylate, an alpha adrenergic blocker. The Food and Drug Administration (FDA) has approved Ryzumvi™ ...

Many factors can influence pupil size. Typically, the pupils open up in low light situations to let in more light. However, some research suggests that attraction and mood might also cause pupil ...

Synechiae are adhesions of the iris to ocular structures, which can cause issues of aqueous blockage, pupil dilation and more. Anterior synechiae are at the angle of the eye where the peripheral iris ...

I just had an eye exams and this is the first time I've had dilation drops put into my eyes. Everything looks kind of blurry. I forgot to ask the doctor this: Is it ok to put in my contacts now, or ...