Cataracts are very common. The Centers for Disease Control and Prevention estimates that 20.5 million Americans age 40 and over have them. Cataracts slowly cloud your vision, and people struggling with them say it’s like trying to look through a frosted-up window. Cataracts make it difficult to read or drive a car, especially at night.

https://newsnetwork.mayoclinic.org/discussion/cure-cataracts-without-surgery/