1. A quantitative and qualitative assessment of the NOVAWET-Perception bifocal contact lens.;Anderson;CLAO J,1996
2. Verification of the vertex powers of varifocal rigid contact lenses.;Woods;Contact Lens Anterior Eye,2003
3. A clinical study of an RGP multifocal contact lens.;Gromacki;Contact Lens Spectrum,2001
4. Prospective clinical evaluation of the Acuvue Bifocal contact lens.;Key;CLAO J,1999
5. New bifocal designs in hyper-oxygen materials.;Ghormley;Eye Contact Lens,2003