How many curves does a warped lens have?

A warped lens is characterized by having two distinct curves. These curves typically consist of the front surface curvature and the back surface curvature. The front curve is usually the one that faces outward, while the back curve aligns with the shape of the cornea. This design is essential in fitting the lens properly to the eye, allowing for optimal vision correction and comfort. The presence of two curves in a warped lens helps in accommodating various factors such as the fit on the eye and the optical prescription required for the wearer. Thus, recognizing that a warped lens has two curves is critical in understanding lens design and fitting principles in contact lens practice.