Which of the following describes the base curve(s) that a warped lens will present?

In the context of warped contact lenses, the base curve is essential in determining how the lens sits on the eye and interacts with the cornea. A warped lens typically presents a distortion in its shape, which is often due to an improper fit or a manufacturing defect. When considering the characteristics of such lenses, it is important to note that the base curve can be described as two/spherical.

A warped contact lens does not retain the typical single curvature that is characteristic of a properly fit spherical lens. Instead, it can exhibit two distinct curvature radii, meaning that rather than having a singular, uniform curvature, it may adopt a more complicated profile. This situation would arise in lenses designed to correct astigmatism or due to warping, which alters the spherical symmetry usually expected of lenses. The two curves can ensure that the lens stabilizes correctly on the eye while correcting vision as needed.

The term "spherical" refers to the typical shape of a standard lens; however, a warped lens goes beyond this by incorporating two curvatures which maintain a spherical shape in their own right but are irregular in their arrangement or presentation. This distinction is crucial for understanding the behavior and machining of lenses in optical practices.

Therefore, identifying that warped lenses display two