I heard that Central Square Eye Care is a good place to get eye exam. And most of people think Dr. Lewis there is great person and easy o talk to. If you go Central Square Eye Care, maybe you can ask her to check your eyes. And i found some information about Central Square Eye Care at http://www.yelp.com/biz/central-square-eye-care-cambridge#query:Cheap%20Eye%20Exam. You can go and read some reviews to help you judge whether you go there not.