I have had glasses since I was a little girl. I have never had anyone explain to me that the reason my glasses didn't seem to be working is because I didn't wear them the way I am supposed to. Dr McCall told me if I don't use them correctly my eyes can't get accustomed to the help, so when I put them on my eyes are still trying to over compensate for not having them thus making the glasses seem useless. It makes perfect sense now! He was so wonderful and patient. I had to bring my little girl who is almost 2 to my appointment. He never once seemed the slightest bit agitated with her being there, even when she stripped her socks and shoes off!