Bifocal 2
A guide to crisp vision and healthy eyes with gp contact lenses, from the contact lens manufacturers association.
http://www.contactlenses.org/multifocals.htm
Bifolcal
How bifocals work, rgp vs. soft, advantages of different designs, monovision, multifocals, and more.
http://www.allaboutvision.com/contacts/bifocals.htm
Implanteerbare Contactlenzen
Implanteerbare Contactlenzen
http://www.artisanlens.com
Rgp Lenses
Rgp contact lens care: a guide to caring for rgp or gp contact lenses, oxygen permeable contacts, contacts for astigmatism, bifocal contact lenses and more.
http://www.allaboutvision.com/contacts/carergplens.htm
Soft Lenses
Guide to cleaning soft contact lenses, disinfecting solutions, enzymatic cleaners, protein deposits, lipids, frequent replacement and more.
http://www.allaboutvision.com/contacts/caresoftlens.htm