Presbyopia correction maintenance period

I am not yet experiencing difficulties in daily life.

I don't even look far away with my phone.

However, definitely compared to before, the small text is not as clearly visible.

I feel that glare is becoming more intense.

The TV is even worse at recognizing than mom; it takes a long time to see the text.

Since it's familiar handwriting, I can read it, but I actually can't see it very well.

So, I would like to try orthodontic treatment.

I think presbyopia correction is more suitable than LASIK or LASEK.

But I wonder how long this maintenance period lasts.