Do you have any questions concerning the terms on your contact lenses? There's no need to be concerned; it's a really simple and straightforward process. Here's a quick guide to determining your contact lens prescription and what each of the numbers on it signifies.
What method do you use to determine your contact lens prescription?
The power, base curve, and diameter of your contact lenses are the three most important measurements.
A cylinder, axis, add, and, in certain situations, color will be included in some people's prescriptions.
When you go for an eye exam, the optician is required by law to provide you with a prescription, and you are free to purchase your contact lenses from any retailer. Purchasing contact lenses online is less expensive and assures that you get the best value possible.
We don't ask you to email us your contact lens prescription before ordering, but you should double-check that it's up to date before proceeding. At least once every two years, you should have your eyes examined.
Please keep in mind that the prescriptions for contact lenses and glasses are not the same.
For contact lenses and prescription glasses, you'll need different exams. You can't switch from one to the other.
What does the term "power" signify on a contact lens prescription?
Your lens' power is measured in diopters, and it indicates how much correction your lens must supply to correct and sharpen your vision. If you have the proper power, you should be able to see 20/20.
If the minus symbol (-) appears on your prescription, you have myopia and are short-sighted.
If you have a plus sign (+) on your prescription, you are long-sighted and have hyperopia.
What does the term "Cylinder" indicate on a contact lens prescription?
If you've been prescribed toric lenses to treat astigmatism, you'll see a cylinder value on your prescription. A minus (-) symbol is used to measure it.
What does the term "axis" represent on a contact lens prescription?
If you have astigmatism, your prescription will simply include an axis. Degrees are used to measure the axis. The axis is required to compensate for the non-spherical shape of the cornea. The axis will show which way the cylinder power should be positioned.
What does the term "base curve" signify on a contact lens prescription?
The base curve is used to guarantee that a contact lens fits correctly on the eye. It is measured in millimetres and should correspond to the curvature of your cornea. The lower the number, the steeper the corneal curvature.
On a contact lens prescription, what does Diameter mean?
The Diameter is a millimeter-based measurement of the length of your contact lenses from one edge to the other. Irritation can occur if you wear a lens that is the incorrect diameter.
What does it mean to "add on" a contact lens prescription?
The add power is frequently described as a plus (+) power in diopters. It refers to the magnification power of multifocal (also known as bifocal or varifocal) contact lenses.
Colored contact lenses
If you have chosen color contacts, the name of the color will also be printed on your lens box. Be aware that the appearance of colored lenses varies from person to person depending on your individual eye color and the pigmentation of the lens.
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