Hi thank you, it has been 4 weeks today, doctor says his eyes are excellent ! 20 20, he never wore glasses, or had an eye exam,until november, last year, when he found out he had a large cataract, surgery was great but just before his findings he could not go outside, we thought it was the cararact, but its worse, and doctor says now, he believes its "dry eye syndrome"? really? i cant believe it, but doc put eye plugs in and he uses gel drops, thats it, no improvement at all? thats been 1 and a half weeks now.