Contact lenses can be classified in many different manners. Contact lenses can be separated by their primary function, material, wear schedule and replacement schedule.

Corrective contact lenses are designed to improve vision, most commonly by correcting refractive error. This is done by directly focusing the light so that it enters the eye with the proper power for clear vision. There has been renewed interest in orthokeratology, the correction of myopia by deliberate overnight flattening of the corneal epithelium, leaving the eye without a refractive error during the day.

A spherical contact lens bends light evenly in every direction. They are typically used to correct myopia and hyperopia. A toric contact lens has a different focusing power horizontally than it does vertically and as a result can correct for astigmatism. Some spherical rigid lenses can also correct for astigmatism.

Caring For Your Lenses

1. Lens Care Remember, there is no cleaning or disinfection needed with 1 day lenses. Always dispose of lenses when...

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Contact lens handling and insertion

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Why opt for contact lenses?

They are placed right onto the eye surface for more natural vision. Your entire field of view is in focus....

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Take precautions in these situations

DO NOT use if the sterile blister package is opened or damaged. Before leaving the eye care practitioner's office, you...

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DO NOT USE contact lenses when any of the following conditions exist:

Acute inflammation or infection of the anterior chamber of the eye Any eye disease, injury, or abnormality that affects the...

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Contact lens problems and What to Do

The following problems may occur when wearing contact lenses: Your eye may burn, sting and/or itch. There may be less...

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Conduct a simple self examination

How do the lenses feel on my eyes? How do my eyes look? Do I continue to see well? If...

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