What is the purpose of a cosmetic iris lens with optics?

A cosmetic iris lens with optics is designed primarily to mask defects in the appearance of the iris while also having the potential to enhance vision. These lenses can cover imperfections such as irregularities or scarring of the cornea, and they can improve aesthetic appearance by offering a more uniform iris look. Additionally, they might have optic properties that allow for some degree of vision enhancement, particularly in instances where the underlying visual system is compromised.

The other options do not fully capture the dual purpose of a cosmetic iris lens. While some may emphasize the role of color enhancement alone, they do not account for how the lens also addresses defects and vision improvement. The focus on magnification misses the broader application of aesthetics and functional vision support. Lastly, serving merely as a protective cover does not recognize the functional aspect related to vision correction or improvement. Thus, the chosen answer accurately reflects the dual utility of cosmetic iris lenses.