Therapy to prevent blindness

To better Verte. The drug therapy for glaucoma can prevent blindness, but until today, this meant multiple daily doses of beta blockers and potential side effects as impotence.

The Food and Drug Administration (FDA) of the United States has approved a new drug: the latanoprost (Xalatan), which is effective in a single daily dose and has much fewer side effects. "Patients are more convinced taking latanoprost regularly," says Dr. Ronald Gross, an associate professor of ophthalmology at Baylor College of Medicine. Unfortunately, drugs obscures the iris of the eye clear of people.

The FDA recommends that doctors use medicine as a last resort, to realize what is causing the discoloration.

Why us blind flash?

All the light that reaches our eyes stimulates substances in a protein called purple or retinal Rhodopsin.
Specifically, their molecules react decomposing, giving rise to an electrical impulse that is transmitted to the brain via the optic nenio.

If the brightness is normal, our retinas have enough rodopsina to function smoothly.
By contrast, when a flash is affected by photographic or other overdose photon-like the one that occurs to look directly at the sun, these molecules stimulate the photochromic nenio excess, which produces a saturation point.
The blindness is, therefore, the time spent in the back of retinal purple fogonazo.