Is obtaining a driver's license with a medical certificate that includes an inaccurate eye exam due to wearing eyeglasses considered deception, which would render the license unlawful (haram), and what should be done to rectify this?

What you did by insisting on the eye exam to obtain the license is what is required by Islamic law. By doing so, you have cleared your conscience and avoided deception. There is no need for obsessive doubts or anxiety, because eyeglasses compensate for poor vision, and you should change them with a specialized doctor whenever you feel a decrease [in vision]. There is no legal impediment to possessing and using the aforementioned license.