normally the number increases upto the age of 18 to 20 yrs but in your case if it is progressive myopia then you will have to be very careful
Next Steps
must get yor eye checked at regular intervals e.g. every 6th month or earlier
avoid jumping lifting weight more than 10 kg
over strain to yor eyes and rubbing etc
Health Tips
be in reular touch with a qualified ophthalmologist and get your retina examind