Answer:
You'll have to consult an optometrist if you want to improve this.
What is yours but only used by others?
I shave several times a day, yet I still have a beard. Who am I?
Without this, H2O would just be 2O
What cannot talk but will always reply when spoken to?
What language does a billboard speak?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?