My vision was horrible before ortho-k. Before I started, my vision was -4.00 in my right eye and -3.50 in my left eye. My glasses prescription kept going up every year. After I started ortho-k, in a couple of days, I had almost perfect vision. In about a week my vision was back to where it was supposed to be. Thank you Dr. Friedman and Family Vision Center for returning my vision back to normal. I Love seeing the world clearly without glasses. I would highly recommend ortho-k to kids that want to see clearly without glasses or contacts. Thank you so much!