Nailfold Capillary Blood Flow With Latanoprost Bunod

The purpose of this study is to look at the relationship of small blood vessels irregularities observed with an imaging system called video nailfold capillaroscopy in people with primary open-angle glaucoma. Nailfold capillaroscopy (NFC) is a video camera with a magnifying lens used for studying the movement of blood in small blood vessels. It is simple, safe and does not penetrate the skin. The skin fold that is at the tip of the finger is called the "nailfold". NFC has been used to assess blood vessel narrowing in patients with glaucoma.