My son is 3 n half year old.He is 7month premature.He readily accepts glasses from 2nd year.He had a number right from born.Now He diagnosis with Myopic Astigmatism Compound (OU).His right eye number is -8.5D Sphere -4D Cylindrical 20Axis and right eye number is -10D Sphere -4D Cylindrical 170Axis.The doctor is prescribing a MYOPIN eye drop for a month.Sir What can I do to make it to normal vision?If number is increasing day by day,what will be worst effect of it?Any precautions that is helpful to get rid of myopia?What is maximum power of Cylindrical power?