Eye Exams Why are Eye Exams Important? Catching problems in their early stages can prevent vision loss. An eye exam can do this by catching things you haven't yet noticed. Dr. Alexander McGowan provides more info. Preparing for an Eye Exam Make the most of your exams by knowing how often to get them, and what information to bring with you to the Allied Vision Services offices. Your Comprehensive Eye Exam Learn what common tests and procedures to expect during a routine eye exam.