Researchers are closer to finding a way to restore sight for patients blinded by certain types of macular degeneration.
Senior Health Correspondent Monica Robins shows us how injection therapy may hold more promise than previously thought.
Macular degeneration has been a condition that we haven't been able to do a lot for. For many years we had no treatment. We had to tell people, go home, use more light, use magnification, but we really can't help you.
A team of reserachers at University of california at Berkeley found a temporary return of vision to blind mice by injecting an ammonium chemical.
The chemical incraeses the sensitvity of light to the eyes, which allowed the mice to see.
It's the first sign that we can actually inject something into the eye that will reverse the damage done to cell called photo receptors which cause blindness.
The ability to inject chemicals to cure blindness is a greater step than previous research that has been more permanent, like gene thearpy.
The chemicals are gone when they're gone. So, if it doesn't work or it causes problems, the chemical is out of the eye and essentially you've turned off the treatment. You don't have to worry about what it might be doing from that point on.