What aspect of eye care does contact lens fitting involve?

Contact lens fitting primarily involves measuring corneal curvature. This process is crucial because the cornea, which is the transparent front part of the eye, influences how light is refracted and how contact lenses sit on the eye. Accurate measurement ensures that the lenses fit properly, providing comfort and optimal vision correction.

A correct fit helps prevent complications such as discomfort or corneal distortion, which can arise from lenses that are too tight or too loose. Therefore, the fitting process usually includes the use of instruments like a keratometer to assess the curvature of the cornea. While other aspects of eye care, such as testing visual acuity, assessing color vision, and evaluating overall eye health, are important in a comprehensive eye examination, they are not the focal points in the specific context of contact lens fitting.