Which of the following describes a new type of aspheric lens design?

The correct choice identifies a bitoric lens as a new type of aspheric lens design. Bitoric lenses incorporate two different curvatures in the vertical and horizontal meridians, allowing them to correct astigmatism effectively while maintaining a more natural visual experience for the wearer. This design can significantly reduce distortion, enhancing image quality by providing a smoother transition between focal points and reducing peripheral aberrations.

Aspheric lenses, in general, serve to improve optical performance by eliminating the spherical aberrations associated with traditional spherical lenses. However, the bitoric design specifically addresses astigmatism by incorporating toricity in both axes, which is a notable advancement in lens technology.

Other designs mentioned, such as aspheric toric, aspherical concave, and multifocal aspheric, are variations of aspheric lenses but do not necessarily represent a new type specifically like the bitoric design does. Each of those options may serve specific visual needs but does not expand on the current advancements in correcting astigmatism in the same way that the bitoric lens does.