Do I need to take an eye exam every time I renew my license?
Yes you must pass a vision test when you apply for a driver license or to renew your license.
What about if my son needs telescopic lenses?
In that case he must send a completed Eye Test Report for Medical Review Unit form MV-80L to the DMV 's Medical Review Unit. Eventually a "TELESCOPIC LENSES" restriction will be placed on his driver license.