Verification of a base curve radius should be performed before dispensing lenses.

• A. True
• B. False
• C. Not always
• D. Only for initial fittings

Answer: (D)

Verifying the base curve radius is essential to ensure the lens will sit on the eye with the proper alignment and movement. Getting this right at the initial fitting sets the stage for comfort, good centration, and healthy tear exchange. Once the correct base curve is established, routine dispensing of replacement lenses or refits generally doesn’t require re-verification unless something changes—like trying a different lens design or material, a prescription change, or if the patient reports a fit issue. So, the most appropriate guideline is to verify the base curve during the initial fitting, and only revisit verification if a change or problem arises.