Is this dispensing up to the mark?

While no one disputes the importance of precision fitting of lenses, especially the progressives (with optical centres of lenses matching the patient's monocular PD), I seek advice of experts about the shortcomings, if any, in dispensing lenses based on markings of pupil centres on demo lenses of selected and adjusted frame, as depicted in the following illustration (by innumerable practitioners in developing countries including India who do not own a pupillometer).

Dr. Narendra Kumar
Editor, Optometry Today
OptometryToday@gmail.com