We can and do treat the two most common causes of blindness in the world:

cataracts (which everybody gets if they live long enough; treated with surgery to replace the clouded lens with an artificial lens), and

diabetes (by managing the disease so that it does significantly less damage to the body, including the eyes).

It’s awesome to know we’re making strides in retina technology too (incredibly more complicated than replacing the lens in cataract surgery!) but don’t take for granted the incredible things we already can do!