There are plenty of other places like Walmart and Visionworks that have eye exam at relatively lower price, usually cost you around $50. Eye doctors are required by â€œEyeglass Ruleâ€ to release a copy of your prescription after each eye exam at no extra cost. They may persuade you to purchase contact lenses there, but if you insist saying no to them, they can do nothing. You have the right to use the prescription you get from there, and buy contact lenses from where you want to.
You should go to other optical stores to have an eye exam. And then you can get your contacts with your prescription. There is no ther way that you can know your prescription if you don't go to have an eye exam.
Oh, it is really impossible to know your eye prescription if you don't visit an eye doctor. Although there are eye chart that can help you know your prescription. But they are not accurate for people to get prescription eyeglasses or contact lenses. So, if you need vision aids from prescription eyeglasses or contact lenses, you shall visit an eye doctor for a completely eye examination.