- Types of contact lenses
- Soft contact lenses
- Rigid-gas-permeable (RGP) contact lenses
- Extended wear contact lenses
- Disposable (replacement schedule) contact lenses
- Lens comparison
- Specialized uses of contact lenses
- Orthokeratology (Ortho-K)
- Decorative (Plano) contact lenses
- Contact lens solutions and products
Types of Contact Lenses
Soft contact lenses are made of soft, flexible plastics that allow oxygen to pass through to the cornea. Soft contact lenses may be easier to adjust to and are more comfortable than rigid gas permeable lenses. Newer soft lens materials include silicone-hydrogels to provide more oxygen to your eye while you wear your lenses.
Rigid-Gas-Permeable (RGP) Contact Lenses
Rigid gas permeable contact lenses (RGPs) are more durable and resistant to deposit buildup, and generally give a clearer, crisper vision. They tend to be less expensive over the life of the lens since they last longer than soft contact lenses. They are easier to handle and less likely to tear. However, they are not as comfortable initially as soft contacts and it may take a few weeks to get used to wearing RGPs, compared to several days for soft contacts.
Extended Wear Contact Lenses
Extended wear contact lenses are available for overnight or continuous wear ranging from one to six nights or up to 30 days. Extended wear contact lenses are usually soft contact lenses. They are made of flexible plastics that allow oxygen to pass through to the cornea. There are also a very few rigid gas permeable lenses that are designed and approved for overnight wear. Length of continuous wear depends on lens type and your eye care professional's evaluation of your tolerance for overnight wear. It's important for the eyes to have a rest without lenses for at least one night following each scheduled removal.
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