Yes
No, you don't. There are opticians with glasses out there.
Credentials to become an optician vary from state to state. Some states only require on the job training while others require four years of schooling and an apprenticeship.
the UK doesnt even have opticans
You can't become levels, but you need over 1,000 points to get to the next level.
eat eyes
You need biology for definite
beautician
It is possible to do so - you will need to contact your optician.
10 years
go to an optician, you may need your eyes tested
The main one is Biology.
sciences and maths