Eye Tests For Spectacles And Contact Lenses | New Health and ...

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Before you can buy contact lenses, or specs either for that matter, you will need to submit yourself to an eye test. However, the eye test for contact lenses is a bit more detailed than a test for regular glasses, so you should tell the optometrist which sort of lens you want before the test starts in order to save time.

An eye test will normally start with a physical examination of your eyes for signs of eye disease such as cataracts and glaucoma or general worries such as high blood pressure or diabetes. This is why it is so important to have an eye test at least every two years, because a medical doctor does not give routine checks for cataracts, diabetes or glaucoma, all three of which can turn you blind.

Your optometrist might pose other questions too such as why you would prefer to have contact lenses rather than specs and whether you have had any trouble with your eyes. The decision to wear contact lenses or glasses is entirely yours, although in some countries glasses may be free whereas there may be a charge for contact lenses because they are more expensive.

The results of the optometrist?s test will produce a set of numbers which will tell an optician the strength of the lens required for each eye as the lens needed for each eye is normally different. This is commonly referred to as your prescription. Then you take this prescription to an optician to select your spectacle frames, if you are having spectacles, and to have your lenses manufactured or and fitted.

In the case of spectacles, lenses will either have to be cut or and adjusted for the frames that you would like and in the case of contact lenses, you might have to have the lenses made. In either case, you might be lucky enough to walk out of the shop wearing your glasses or contacts or you may have to return in a couple hours or even a couple days. No optician worth his salt will sell you costly lenses without a prescription.

There is an clear vital difference between glasses and contact lenses ? contacts have to come into contact with your eyeballs and not all eyeballs are precisely the same shape. Therefore, if you would like contacts, the optometrist will have to measure the exact curvature or the exact contours of your eyes and this will become part of your prescription. Some eyes are naturally drier than others and this can have an effect on the type of contact lenses that you should buy.

Your optician will then often give you a pair of trial contact lenses and require you to return a couple of days later for further tests. You might have to wear a number of types of contacts before you find a type or marque that suits your particular eyes and sight.

Once you have contacts that seem to suit, you will have to follow the directions and advice that comes with them and return for your check-ups when you are asked to. These follow-ups are important to make sure that the contact lenses are not irritating your eyes or causing more serious conditions.

Owen Jones, the writer of this article, writes on many subjects, but is at present busy with wholesale first aid kits. If you have an interest in RC vehicles, please come over to our website now at First Aid Courses Online.

Source: http://newhealthandfitness.org/2012/02/03/eye-tests-for-spectacles-and-contact-lenses/

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