Answer:
I am an object which is used in baseball during the day I can't be seen at all
What has many teeth but can't bite?
I no longer have eyes, but once I did see. Once I had thoughts, but now Iβm white and empty. What am I?
I always have to work with something in my eye.
No matter how little or how much you use me, you change me every month.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?