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en.wikipedia.org/wiki/Eyeglass_prescription

An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist .... In the case of an eyeglass lens, this means that the lens should be roughly shaped like a cup with the hollow side toward the eye, so most ...

www.allaboutvision.com/eyeglasses/eyeglass-prescription.htm

(If that's not the case, and you need to see an eye doctor, click here to find one near you.) But what do all those numbers on your eyeglass prescription mean?

www.webmd.com/eye-health/how-read-eye-glass-prescription

WebMD helps you understand what your eyeglass prescription means. ... The C refers to the "cylinder" or astigmatism, and can be a negative or a positive ...

www.lenscrafters.com/lc-us/vision-guide/glasses-prescription

SPH(or Sphere) indicates the eyeglass prescription power, or how strong your ... If your vision correction is single vision, that means your lens power corrects for ...

essilorusa.com/newsroom/decoding-your-eye-glass-prescription

Sometimes a prescription will include the letters “OU,” oculus unitas meaning both ... While using the Latin abbreviations is traditional for eyeglass prescriptions, ... Astigmatism is a condition where the eye does not focus light evenly onto the ...

www.aclens.com/Content/Display/172

This means you do not have an astigmatism correction in one or both eyes. AC Lens can create lenses for prescriptions with Cylinder ranges between -5.00 and  ...

www.vsp.com/glasses-prescription.html

VSP can help you decode your glasses prescription. You'll ... These are all refractive errors that simply mean your eyes have trouble focusing light correctly.

www.framesdirect.com/landing/a/understanding-your-prescription.html

That code lets your eyeglass manufacturer know not only if you're ... your prescription so you can be knowledgeable about your own eye health, track any ... If you see OU, it stands for "oculus uterque," meaning both eyes measured the same.

www.webmd.boots.com/eye-health/guide/what-does-my-glasses-prescription-mean

Feb 22, 2016 ... What does it all mean? ... What does my glasses prescription mean? ... will see a notation for OU, which means something involving both eyes.