how does the dmv determine whether you pass or fail the vision test in california? ive heard some people say that both eyes have to be at least 20/40, but then ive also heard that if at least one eye is 20/40 or better, you can pass. which is correct? and also, what are the procedures of taking the vision test? how is the test given in CA?

Ask the CA DMV.

You keep asking about this, do you have a vision problem? In a most simplistic answer, basically you will look at a chart hanging from the ceiling behind the agent helping you. The chart will have 5 lines of 5 letters each with the biggest on top, the smallest on the bottom. If you can read the middle line with each eye you will pass. You're worrying too much about this. Are you worried about getting a license with the ''Must wear Corrective Lens'' restriction?