A protein fragment that litters the brains of people with Alzheimer's disease may also bear responsibility for some of the vision loss in glaucoma, a new study in rats shows.
Glaucoma patients typically have abnormal fluid pressure within the eye, but it remains unknown how this stress kills the nerve cells at the back of the retina. While there is no cure for glaucoma, easing eye pressure with drugs or surgery helps prevent vision loss in many patients.
Some glaucoma patients, however, experience vision loss even with normal eye pressure, indicating that other factors are sometimes involved.
The new research suggests that one hidden assailant is a