A cataract is a clouding of the normally clear lens of your eye. Looking through a cloudy lens is like trying to see through a frosty or fogged-up window. Clouded vision can make it more difficult to read, drive a car – especially at night – or see the expression on a friend’s face....
“Treat disease through diet, by preference, refraining from the use of drugs; and if you find what is required in a single herb, do not resort to a compounded medicament” by Baha’u’llah cited in J. E. Esslemont, "Baha'u'llah and the New Era"