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 ask other questions too such as why you would prefer to have contact lenses rather than glasses and whether you have had any trouble with your eyes. The decision to wear contact lenses or spectacles is wholly yours, although in some countries specs may be free whereas there might be a charge for contact lenses because they are more costly.
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 usually different. This is commonly referred to as your prescription. Then you take this prescription to an optician to pick your spectacle frames, if you are having glasses, and to have your lenses manufactured or and installed.
In the case of specs, lenses will either have to be cut or and adjusted for the frames that you want and in the case of contact lenses, you might have to have the lenses manufactured. 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 few hours or even a couple days. No optician worth his salt will sell you expensive lenses without a prescription.
There is an clear important difference between spectacles and contact lenses - contacts have to come into contact with your eyeballs and not all eyeballs are exactly the same shape. Therefore, if you want contacts, the optometrist will have to measure the exact curvature or the exact contours of your eyes and this will be part of your prescription. Some eyes are naturally drier than others and this can affect the type of contact lenses that you ought to purchase.
Your optician will then frequently give you a pair of trial contact lenses and ask you to return a couple of days later for further tests. You might have to try out 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 appear to suit, you will need to follow the instructions and advice that comes with them and return for your check-ups when you are asked to. These follow-ups are important to ensure that the contact lenses are not irritating your eyes or causing more serious issues.
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 ask other questions too such as why you would prefer to have contact lenses rather than glasses and whether you have had any trouble with your eyes. The decision to wear contact lenses or spectacles is wholly yours, although in some countries specs may be free whereas there might be a charge for contact lenses because they are more costly.
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 usually different. This is commonly referred to as your prescription. Then you take this prescription to an optician to pick your spectacle frames, if you are having glasses, and to have your lenses manufactured or and installed.
In the case of specs, lenses will either have to be cut or and adjusted for the frames that you want and in the case of contact lenses, you might have to have the lenses manufactured. 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 few hours or even a couple days. No optician worth his salt will sell you expensive lenses without a prescription.
There is an clear important difference between spectacles and contact lenses - contacts have to come into contact with your eyeballs and not all eyeballs are exactly the same shape. Therefore, if you want contacts, the optometrist will have to measure the exact curvature or the exact contours of your eyes and this will be part of your prescription. Some eyes are naturally drier than others and this can affect the type of contact lenses that you ought to purchase.
Your optician will then frequently give you a pair of trial contact lenses and ask you to return a couple of days later for further tests. You might have to try out 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 appear to suit, you will need to follow the instructions and advice that comes with them and return for your check-ups when you are asked to. These follow-ups are important to ensure that the contact lenses are not irritating your eyes or causing more serious issues.
About the Author:
Owen Jones, the author of this article, writes on a number of subjects, but is now concerned with Designer Spectacles. If you want to know more, please go over to our web site at Spectacles Direct.
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