Thursday, October 10, 2013

Contact Lens Can Causes Eye Problems


Contact lenses are small plastic discs shaped to correct an eyesight problem such as nearsightedness, farsightedness, presbyopia, or astigmatism. These are called refractive errors. They may also be used by people who have had surgery for cataracts. 

Features of Contact Lenses

 The lenses are made from different types of materials �� soft and rigid �� and come in a variety of designs and colors. These include disposable, colored, astigmatic, aphakic, presbyopic and keratoconic lenses. The initial fitting and follow up care are important parts of contact lens usage to give maximum benefits of vision, appearance, comfort and tissue integrity.

 An old lens that becomes uncomfortable may be developing deposits on the lens, scratches or nicks in the lens, or problems with the tears lubricating the surface of the lens. People are different with how long a given lens will remain comfortable, and good care of lenses will usually extend the life of a lens. Having to replace lenses frequently due to rapid protein deposit formation or other problems is a good reason to consider disposable lenses.

How to maintain your lenses.

 Don't leave your lenses lying around. When not in use, store them in the appropriate container with the cleaning solution. A dusty atmosphere and chemical fumes may damage your lenses, if they are left uncovered.

 Utmost hygiene must be maintained as contact lenses come into direct contact with your eyes. Always wash your hands before you handle your lenses.

 Daily sterilisation of your lens is a must for soft lens users. Sterilisation refers to cleaning of the lenses with the prescribed cleaning solution, which are sold along with the lenses.

 Contact Lens Allergy

 A common source of allergy is a preservative found in the contact lens solutions. Thimerasol was used frequently as a presevative in the past, but severe allergic problems developed. Now, benzalkonium choride and EDTA are common preservatives found in contact lens solutions. If one develops an allergy or sensitivity to these preservatives, symptoms of allergy (redness, itching, discharge) frequently develop especially when the lens is first inserted, or when rewetting drops containing these preservatives are used.

 Soft contact lens helps in surface disorders by preventing recurrent surface breakdowns and by restoration of optical integrity of the surface. The present study is aimed to highlight the efficacy of high hydrophilic extended wear soft lens in the management of surface disorder.

 Have dry eyes or problems with the cornea. People who have Sjgren's syndrome (a condition that causes a lack of tears and dry eyes) often are not able to wear contacts. People who have chronic or recurrent infections or sores on the cornea cannot wear contact lenses.

 The usage of contact lenses may give rise to problems like eye infections, allergic reactions to lens care solutions and deposit on lenses, redness of the eyes, scratched corneas, alteration in corneal shape and structure and abnormal blood vessels growing in the apparently clear cornea. You should consult your eye specialist without delay if there is burning, extreme sensitivity or hazy vision or pain.
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Types Of Eye Infections


There are many different types of eye infections with different causes and treatments. Some eye infections are common while others are rare. However, none should be taken lightly.

 Preventing Conjunctivitis

To prevent infectious conjunctivitis, teach your kids to wash their hands often with warm water and soap. They also should not share eyedrops, tissues, eye makeup, washcloths, towels, or pillowcases with other people. Always maintain proper hygiene and do prevent your child from rubbing their eyes.

 Preventing the Spread of Pink Eye Infection

A child who already has conjunctivitis should wash his or her hands after touching the eyes, since conjunctivitis can easily spread from one eye to the other on contaminated hands or tissues. Be sure to wash your own hands thoroughly after touching your child's eyes, and throw away items like gauze or cotton balls after they've been used. Wash towels and other linens that your child has used in hot water separately from the rest of the family's laundry to avoid contamination. Practice proper hygiene and pink eye can be prevented from spreading to the rest of the family.

 Preventing Recurring Eye Infections

Some people develop recurring episodes of active infection. As mentioned above, these occur if the virus 'reactivates' from time to time - similar to cold sores. At least half of people who have one episode of active infection will have a recurrence within 10 years of the first. In about 1 in 10 cases, the recurrence is within a year. Recurrences occur more often in some people than others. No one knows exactly why this is so, however, statistics has shown a pretty consistent trend in reoccurrences on the elder people.

 If the recurrences are frequent (say, once a year or more) or severe, then your eye specialist may advise that you take antiviral tablets each day to prevent episodes of active infection. Studies have shown that, on average, the number of recurrences is roughly halved in people who take regular antiviral tablets. So remember to consult your eye doctor if you are prone to eye infections.

 Some people say that episodes of active herpes infection may be triggered by strong sunlight. Wearing sunglasses may also help to prevent recurrences. This has been proven quite true.

 Most of us will either have come upon an eye infection or know someone who has had one. People who wear contact lenses often find themselves getting some type of eye infection. This is due to the bacterial buildup from constantly wearing the lenses without proper disinfecting. Eye infections usually require some type of medication for treatment. Although some are not as dangerous, there are some eye infections that require a doctor's immediate attention.
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