What type of curvature is vital for evaluating contact lens fitting?

Corneal curvature is crucial for evaluating contact lens fitting because it directly relates to how well the lens aligns with the eye's surface. The cornea is the transparent front part of the eye, and its curvature influences the overall shape and fit of contact lenses. A proper fit ensures that the lens sits correctly on the eye, providing comfort and optimal vision correction without causing irritation or damage to the cornea.

If the corneal curvature is not accurately assessed, it could lead to issues such as poor lens stability, discomfort, or suboptimal vision. Therefore, understanding the specific curvature of the cornea is essential for customizing contact lens designs to suit individual eye shapes, which can vary greatly between different patients. By taking into account the unique characteristics of a person's corneal curvature, eye care professionals can prescribe lenses that fit properly and serve the patient's needs effectively.