1. Comparison of the acceptance of progressive addition multifocal vs. a standard multifocal lens design.;Hitzeman;J Am Optom Assoc,1985
2. A clinical study of patient acceptance and satisfaction of Varilux Plus and Varilux Infinity lenses.;Cho;J Am Optom Assoc,1991
3. Lined multifocal wearers prefer progressive addition lenses.;Boroyan;J Am Optom Assoc,1995
4. Progress in the spectacle correction of presbyopia. Part 1: Design and development of progressive lenses.;Meister;Clin Exp Optom,2008
5. Field study of a new progressive addition lens.;Wittenberg;J Am Optom Assoc,1978