Myopia is usually hereditary problem either from mother or father side ,at age of 15 yrs -5.5 d is too much but maximum myopic power increases between 13 to 19 yrs because maximum body growth in girl takes place between these years .There in direct medicine to control progress of myopia, you try to take balanced diet along with lots of green vegetables & multivitamin tab,with regards

There is no medication or food for improving eyesight or to get rid of glasses. If not interested in glasses then you can try a. Contact lens b. Lasik laser as your age is now 15 years so your number will increase now whether you wear glasses or not as number becomes stable at age of 18-20 yrs. Having said that I advise you to eat balanced diet including green vegetables and seasonal fruits for keeping eyes and body healthy. If you are not comfortable with contact lens then go for lasik. Lasik is a very easy and painless procedure. If you want to get rid of glasses then go for lasik after age of 18 yrs