Does the pupil size have an effect on the success rate of the Focus PROGRESSIVES lens?
Yes, but no more than other multifocal simultaneous vision lenses. The average pupil size of 2-4 mm is optimal. The ideal patient has a pupil size no larger than 4 mm in normal room illumination. Centration plays an important role as well. If someone has small pupils and the lens centers over the pupil, then one could expect some compromise at distance. Usually there is slight lens decentration so this is not encountered frequently.
