Hello there.
No, we can't improve vision. It takes it's natural course.
U r a Myopic, and 3 ways options (mainly)
1. Spectacles ( I ll suggest if u have a low power then use spectacles only)
2. Contact lenses (cumbersome to wear and to maintain)
3. Laser treatment (LASIK) - to get rid of glasses.
Next Steps
Eat food food, add green vegetables.
To get rid of glasses, go for LASIK