Diopters represent the amount of correction you need to normalize your vision. The more nearsighted or farsighted you are, the higher your prescription in diopters. Your prescription, including both eyes, will generally look something like this:. If your eyes are different, your VSP network doctor can provide a different prescription for each eye to meet your specific needs. Information received through VSP Vision Care channels is for informational purposes only and does not constitute medical advice, medical recommendations, diagnosis or treatment.
Always seek the advice of your eye doctor, physician or other qualified health provider with any questions you may have regarding a medical condition. Members Members. Eyewear and Wellness. Eye Health and Wellness. Glasses Prescription. Here are three of the most common eye conditions that require a prescription in the first place: Myopia —commonly called nearsightedness, which makes distance vision blurry Presbyopia —commonly called farsightedness, which makes near vision blurry Astigmatism —which focuses light on more than one spot on the retina, making vision blurry These are all refractive errors that simply mean your eyes have trouble focusing light correctly.
Your prescription, including both eyes, will generally look something like this: OD For each prescription, we also included how it would appear when adding it to our website. At the end of the page are examples of unusual cases you may encounter, with instructions for what to do. Skip straight to the more unusual items. Sometimes figures like this appear on your prescription. These are not needed to make your lenses.
Some prescriptions have this figure, which looks like a sideways 8. This prescription also has some figures scrawled underneath - these are additions for both intermediate and near distances. This simply means there is no astigmatism, and you can enter either nothing leave the field blank or select the phrase DS in the drop down. All rights reserved. UK company number: Free home trial Free returns. Glasses Direct.
Some doctors will add "DS" for "diopters sphere" and others will leave it blank. A cylinder power with an axis at the meridian. This means that the horizontal degree meridian of the eye has no added power for astigmatism and the vertical degree meridian gets the added Prismatic correction of 0. In the right eye, the prism is base down BD ; in the left eye, it's base up BU.
Your eye doctor may also write specific lens recommendations on your eyeglass prescription. An eyeglass prescription only works for the purchase of eyeglasses. It does not contain certain information that is crucial to a contact lens prescription.
That information can only be obtained through a contact lens fitting , an additional procedure that can be performed during your eye doctor visit. Eyeglass lenses are positioned at a distance from the eyes, while contacts rest directly on the eyes.
That distance affects the lens power required for eyes to focus properly. In addition to the information in an eyeglass prescription, a contact lens prescription must specify the base central curve of the back surface of the contact lens, the lens diameter, and the specific manufacturer and brand name of the lens. Also, the power of an eyeglass prescription frequently is modified when determining the best contact lens power.
This is because eyeglass lenses are worn some distance usually about 12 millimeters from the surface of the eye, whereas contact lenses rest directly on the cornea of the eye. An accurate contact lens prescription can be written only after a contact lens fitting has been performed and the prescribing doctor has evaluated your eyes' response to the lenses and to contact lens wear in general.
Their Prescription Release Rule requires that eye doctors give patients a copy of their eyeglass prescription at the end of an eye exam that includes a refraction. The Prescription Release Rule is intended to allow the "portability" of your eyeglass prescription, giving you the freedom to buy glasses from any vendor of your choice.
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