Yes, why would you want to wear contavts if your vision is 20 20 , that would make no sense at all. Contact lenses are like glasses, they help a person see clearly.
If the contact lenses are for improving sight then you do need a prescription. If the contacts are for changing eye color then you can get those just about anywhere. For example, the Korean wig store...
The purchase of contact lenses requires you to have a prescription. The health of your eyes is extremely important, so you should be guaranteed that the contacts you are purchasing are safe for your...