One of the common methods for correction of refractive errors is the use of contact lenses. By using contact lenses, it looks like you wear no eyeglasses and at the same time you can experience better vision. It should not be forgotten that improper use of contact lenses can lead to problems such as corneal infections, which in some cases will be very severe and will result in partial loss of vision. This guide will help you properly wear and care for your contact lens. A special clinic for contact lenses has been established in Iran-Tehran Noor Eye Hospital .