Wednesday, February 3, 2010

Disposable Contact Lens Types

The majority of contact lenses prescribed are some type of disposable lens. Disposable lenses are more comfortable, easier to care for, and are more economical than most conventional contact lenses.

There are 3 main types disposable contact lenses:

Regular (Spherical) Contacts
Simple, single-vision lenses for myopia, hyperopia (farsightedness) and presbyopia (aging eye).  Well known brands include Acuvue Oasys, Air Optix Aqua, and Focus Dailies.

Toric Contacts
Cylindrical lenses to correct astigmatism. They are weighted to rotate via gravity to the exact position that matches the “warp” of the cornea.  Commonly worn brands are Acuvue Oasys for AstygmatismAir Optix for Astigmatism, and Vertex Toric.

Bifocal/Multifocal Contacts
For people with presbyopia. Two or more corrections can be provided in a progressive version that allows gradual changes from one correction to another.  Purevision Multifocal, Acuvue Bifocal, and more recently Air Optix Multifocal are all commonly prescribed multifocal lenses.

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