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Contact lenses is the number one option for most people who have vision correction needs. For many, contact lenses provide flexibility and convenience. There are various different lenses available today for a variety of needs and personal preferences. Contact lenses can be used to correct a variety of vision disorders such as Myopia (nearsightedness), Hyperopia (farsightedness), Astigmatism, and Presbyopia (weak focusing on reading material and other near vision tasks).
If you plan to wear contact lenses, then you need to first go to an ophthalmologist, optometrist, or in certain states, an optician. This is true even when you don't usually wear glasses and you just desire to wear contacts to change your eye color.
There are two general categories of contact lenses -- soft and rigid gas permeable (RGP). All contact lenses will require a validated prescription.
Soft contact lenses are made of soft, flexible plastic materials that permit oxygen to pass through to the cornea area. Soft contact lenses are usually easier to adjust to and are far more comfortable than rigid gas permeable lenses. Newer soft lens materials comprise of silicone-hydrogels will allow more oxygen to your eye while you wear your 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 costly during the lenses life simply because they last longer than do soft contact lenses. They are much easier to handle and are less likely to be torn. No matter what though, they are not as comfortable initially as soft contacts and it may take a few weeks to get used to wearing RGPs, compared to just a few days for soft contacts.
Extended wear contact lenses are obtainable for overnight or continuous wear ranging from 6 nights up to 30 days. Extended wear contact lenses are frequently a version of soft contact lenses. They're made of flexible plastics that let oxygen pass through to the cornea. There are also a handful of rigid gas permeable lenses that are aimed and approved for overnight wear. Length of time of continuous wear will depend upon your lens type and your eye doctor's evaluation of your tolerance for overnight wear. It’s important for the eyes to have a rest without wearing your lenses for at least one night after each scheduled removal.
The majority of soft contact lens users are prescribed certain types of a frequent replacement schedule. "Disposable" as defined by the FDA, means they are used one time and then are discarded. With a true everyday wear disposable plan, then a totally new pair of lenses is used each and every day.
Often soft contact lenses are referred to as "disposable" by contact lens e-taillers, yet actually, they are for oft-repeated and planned replacement. Using extended wear lenses, the lenses are likely worn continuously during the prescribed wearing period (for instance, 7 days to 30 days) and then are thrown away. Whenever you remove your lenses, it's important to clean and disinfect them correctly before reinserting them.
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Soft Contact Lens Tips.
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