During a regular eye exam several test are made, The overall health of your eyes is evaluated, and if necessary, a prescription is written for glasses. If you want to wear contact lenses,Different measurements need to be taken. These measurements require different instruments and take more time. You should always tell us in advance if you want contact lenses so we can be prepared to spend the time with your. Due to the complexity of the contact lens exam, We charge an extra fee called a contact lenses evaluation fee. This is in addition to the fee charged for your regular exam. You can also check with your insurance provider to see if you are covered or have a co-pay for an evaluation.