Our daughter felt very uncomfortably with the new prescription. When we came back for a re-examination, Dr. Yunker reacted very rude and arrogant, claiming the machine is 90% of time correct and his prescription matched with the machine's reading, and insisting on our daughter to force herself into the new prescription. Also, he seemed to be irritated by the fact that we did not buy the glasses in the store that associated with his practice. As an eye doctor, Yunker turns a complete blind eye to patient's comfort and reaction.