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 20 years so your number will not 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.

There is possibility of removing this number but nobody can guarantee that the number will not come. As the number has been stable there are less chances but chances will still be there. Think of it like this, even if you don't get surgery done can you predict what will be your glass number next year? Will it change ? So, surgery or no surgery, no body can predict and hence nobody can guarantee. We can only talk about the probability of not getting a number after surgery.