Can eyesight improve naturally without surgery?

Recently, when I wear glasses, I can't see things clearly within 30 cm.

It seems to be presbyopia, in common terms.

I'm not sure if it's because I use my eyes a lot or if it's due to aging.

I do not want to undergo LASIK or LASEK surgery.

Is there a way to improve near vision through exercise or nutrition?

I'm wondering if there is a natural way to improve eyesight through diet.