What is the main function of contact lens cupping?

The primary function of contact lens cupping is to create a pool of tears beneath the lens, which is essential for both comfort and vision correction. This pooling of tears under the lens allows for lubrication, minimizing friction between the lens and the surface of the eye. It not only enhances comfort for the wearer but also aids in maintaining a clear visual pathway, as the tears help to improve the optical quality of the lens surface by preventing debris and ensuring a stable tear film.

While holding the lens in place during sports, providing a barrier against allergens, and blocking ultraviolet rays are all useful functions in specific contexts, they do not encapsulate the primary purpose of cupping. Cupping specifically relates to the interaction between the lens and the tear film, which is vital for the overall efficacy of the lens in vision correction and daily wear comfort.