When dispensing a pair of progressive addition lenses, the manufacturer's markings are used to do what?

• A. Will help the dispenser make the final frame adjustments.
• B. Identify the lens brand
• C. Determine the lens color
• D. Indicate lens material

Answer: (A)

Marks on progressive lenses serve as alignment references that guide you during final frame fitting. These tiny markings show where the optical centers and the progression zones are supposed to sit relative to the pupil, so you can correctly position the lens in the frame, adjust tilt and pantoscopic angle, and verify the corridor height. When the lens is aligned with these references, the wearer can look through the appropriate part of the lens for distance, intermediate, and near tasks, reducing distortion and ensuring comfortable vision.

The markings aren’t used to identify the lens brand, determine color, or indicate lens material. Those details come from the lens order, coatings, and labeling provided by the manufacturer or supplier, not from the alignment marks on the lens itself.