Friday, September 12, 2008

Contact Lenses

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There are two main categories of contact lenses: hard and soft lenses. They each have different benefits and down sides. In this article we will compare hard and soft lenses to help you understand the difference between them.



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The two categories of contact lenses

Hard lenses are made out of silicone polymers which facilitate the flow of oxygen to your eyes. This material is rigid which enhances the durability of hard lenses. It also means that they are likely to keep their shape.

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Soft contact lenses are made of a plastic polymer that can combine with water. The water in soft lenses enables oxygen to pass through the lens to the eye. This increases comfort for the wearer.

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There are two kind of soft lenses; daily disposable soft contact lenses and extended wear contact lenses.

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Both hard and soft contact lenses sit on the eye’s tear layer and are designed to correct vision problems.

Advantages of Hard Contact Lenses


  • Hard contact lenses do not dry your eyes out as much as soft ones because they allow more oxygen to reach your eye.

  • Hard contact lenses are very durable. They can last between 5 and 10 years.

  • Hard contact lenses an correct most vision problems


Disadvantages of Hard Contact Lenses

  • Hard contact lenses can take some time getting used to as they can be slightly uncomfortable at first

  • Hard contact lenses can be more difficult to put in and take out than soft lenses


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Advantages of Soft Contact Lenses


  • Soft contact lenses are comfortable from the first time you use them which means that it is easy to get used to wearing them.

  • Soft lenses are easy to fit

  • Soft lenses are usually cheaper than hard lenses

  • Soft lenses can be a problem for people who have naturally dry eyes


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Disadvantages of Soft Contact Lenses


  • Soft contact lenses are less durable than hard lenses

  • Soft contact lenses cannot correct all eyesight problems

  • Soft contact lenses do not last as long as hard lenses

A Guide To Cleaning Gas Permeable Contact Lenses

An advantage with RGP lenses is that they require little maintenance; all you need to know is the correct cleaning methods for gas permeable contact lenses and you’re done. But a lot of people are still foggy about the right cleaning methods and how often to polish gas permeable contact lenses.

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Whether you use soft lenses or gas permeable contact lenses, cleaning contact lenses is a must. Gas permeable contact lenses don’t ask for much except proper cleaning methods to keep your lenses clean, maintain good eye health and stay away from infection. Here is a guide to cleaning gas permeable lenses.



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Here’s the ‘How To’All cleaning methods for gas permeable contact lenses start with clean hands. Dirty hands can transfer harmful bacteria to your lenses, cleaner or the case and defeat your purpose of cleaning contact lenses altogether.



lllllllllllllllllll.jpgFor cleaning gas permeable lenses rub lightly with a cleaner using your index finger and soak overnight in a clean case. In case you were wondering, ‘daily’ is how often you should be cleaning gas permeable lenses.Other than this, you also need to polish contact lenses to get rid of any scratches to which gas permeable contact lenses are quite prone. For cleaner, deposit free lenses it is also important to use enzymatic tablets.



llllyyydd.jpgHow often you should polish contact lenses and use enzymatic cleaner is a question best answered by your eye-doctor. He can prescribe how often to polish contact lenses on the basis of your usage pattern and your ability to handle RGPs.



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Cleaning contact lenses is an important part of wearing contact lenses and the prescribed cleaning regimen must be adhered to religiously. It is also imperative that you use the correct cleaning methods for cleaning contact lenses. This way you get clean lenses, infection free eyes and a great vision experience.