Brimonidine ophthalmic

Alphagan is a medication used to treat open-angle glaucoma or ocular hypertension. Alphagan is also used to induce myosis for people suffering from poor night vision after Lasik or PRK surgery.

It may also go by the name brimonidine ophthalmic, or Alphagan-P.

It treats glaucoma through reducing the production of fluid inside the eye, and increasing the amount of fluid that drains from the eye. As a treatment for glaucoma, it is usually given in eyedrop form. It is a pregnancy category B drug.

References:
http://www.drugs.com/alphagan.html

Mosby's drug guide for nurses (7th edition; Skidmore) 2007.