According to the Fred Hollows Foundation, approximately 32.4 million people around the world are blind, with more than half of the cases being caused by cataracts. In the United States alone, nearly 22 million Americans who are over age 40 have cataracts, according to the American Academy of Ophthalmology.
https://www.the-open-mind.com/goodbye-surgery-scientists-just-made-eye-drops-that-dissolve-cataracts