Answer:
You'll have to consult an optometrist if you want to improve this.
You can have it, and be at it, But it never lasts forever.
Defends your noggin from the hard pavement
I'm a god. I'm a planet. I measure heat.
I am neither a guest nor a trespasser in this place. I belong that belongs to me. Where is it?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?