Certified Ophthalmic Assistant Practice Exam 2026 - Free Ophthalmic Assistant Practice Questions and Study Guide

When fitting a contact lens, it is crucial that the lens properly rests on the cornea. This is because the corneal curvature is essential for achieving adequate vision correction and comfort. A lens that is correctly positioned on the cornea allows for optimal alignment with the eye's surface, facilitating the appropriate tear film distribution underneath. This positioning helps to ensure that the lens moves slightly with each blink, promoting tear exchange and maintaining comfort throughout the day.

Proper corneal fitting also helps to minimize complications such as lens displacement, discomfort, or corneal irritation that could arise from poor fit. In essence, the health and performance of the lens significantly depend on its correct placement on the corneal surface, leading to clearer vision and a comfortable wearing experience.