Certified Ophthalmic Assistant Practice Exam

Corneal curvature measurement is crucial in contact lens fitting because the lens needs to rest properly on the cornea, which is the clear, front surface of the eye. Accurate measurement of the corneal curvature helps in selecting a contact lens that matches the shape of the eye, ensuring a comfortable fit and optimal visual performance. When the lens sits correctly on the cornea, it allows for better gas exchange and moisture retention, which are essential for maintaining corneal health.

Additionally, a lens that properly conforms to the curvature of the cornea can help reduce the risks of complications such as discomfort, irritation, or reduced visual acuity which may occur if the lens does not sit appropriately on the eye. This demonstrates the importance of understanding corneal curvature as it directly influences the effectiveness and safety of contact lens wear.