age-related macular degeneration (AMD) and diabetic retinopathy. These diseases can cause a variety of defects in blood vessels inside the eye, including vessel loss, the growth of abnormal vessels, and small bulges that can rupture (called aneurysms).
Adaptive optics (AO) is one technology helping to overcome this problem.
It deals with the tendency of light to become distorted as it passes
through different media such as air, water, or living tissue. AO was
originally developed because astronomers wanted to get a clear view of
objects in space, without distortions caused by the atmosphere. But
vision scientists and eye care experts have a similar problem: When
light is shined into the eye, it is distorted by the cornea (the front,
transparent part of the eye) and the lens. AO systems typically use a
sensor to measure the pattern of blurring and a flexible mirror to
correct it. Read more.