Tips for measuring contact lenses

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And 'well known that soft contact lenses or rigid material is made and are available in different sizes and curvatures. The prescription for contact lenses is based on the specific size of your eye and is designed for certain specific measures, and contacts. There are different types of devices and methods used to measure contact lenses. Just check out these tips on how to measure contact lenses.

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The first thingexpected, PD-stick or ruler to measure the diameter of the optical lens is used. The measure will be recorded in millimeters. The more frequent contacts range from 8 to 14 mm in diameter.

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The second thing is to measure the curvature of the lens with the clock of the target. Slow clock is an optical instrument that curves contact lenses and glasses-based interventions once known. The curved base, the contacts are created to match the curvature of thethe cornea. If the number is lower, the curve of the cornea is steep.

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The third thing is using lensometer. Lensometer Part D as a standard optical equipment used to measure the thickness of the lens used is unknown. However, only certain types of lensometer, the ability to measure the prescription of the lenses, so you must ensure that measures lensometer has contacts.

The fourth thing is the action-ringContact lenses. This should be done by checking the alignment of the lens can be performed, while the lens of the eye. This type of specific markers may help to know if your contact information at the right place on the eye so to speak, is to correct astigmatism. Usually, the indicator will be horizontal in the center and on the outside of the lens, which is called, is "3 and 9 o'clock."

The last thing is to use aberrometry wavefront. And 'know that the technology uses light aberrometerto measure the overall performance of the eye and the defection, but have also been recently used to measure contact lenses. In addition, the machine works well with the prosecution, like the rays of light traveling through contact lenses.

Tips for measuring contact lenses

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