WHAT DOES MY PRESCRIPTION MEAN?
We realize that a prescription can be confusing to read. We have put together a list of terms to make the process easier to understand. It is important to know how to read and understand your prescription before ordering a pair of CliC prescription glasses.
Prescription Terms
Oculus dexter in Latin. Refers to your right eye.
Oculus sinister in Latin. Refers to your left eye.
Near vision
Distance vision
Pupillary distance. This inticates the distance in millimeters from the center of one pupil to the center of the other.
Sphere. This indicates the lens power you need to see clearly.
A minus (-) sign next to the number indicates nearsightedness. A person would experience trouble seeing far away.
A plus sign (+) sign next to the number indicates farsightedness. A person would experience trouble reading something that is close.
The cylinder on your prescription indicates the lens power needed to correct an astigmatism. This means your eye's cornea or lens is not completely spherical.
If blank it means you do not have an astigmatism.
Means the front of your eye is irregularlly shaped. Anyone with astigmatism will have a number from 1 to 180 on their prescription that determines the orientation of their astigmatism correction.
For multifocal prescriptions. This number indicates the added power needed to correct your near vision if your prescription is primarily for distance correction.
Prescription Terms
OD is short for Oculus dexter in Latin which refers to your right eye.
OS is short for oculus sinister in Latin which refers to your left eye.
Near vision would mean your prescription is only for reading.
Distance vision means your prescription would correct your ability to see things far away.
Pupillary distance indicates the distance in millimeters from the center of one pupil to the center of the other. Refer to the Measure your PD page for guidance.
A minus (-) sign next to the number indicates nearsightedness. A person would experience trouble seeing far away.
A plus sign (+) sign next to the number indicates farsightedness. A person would experience trouble reading something that is close.
Sphere indicates the lens power needed to see clearly.
The cylinder on your prescription indicates the lens power needed to correct an astigmatism. This means your eye's cornea or lens is not completely spherical.
If blank it means you do not have an astigmatism.
Means the front of your eye is irregularlly shaped. Anyone with an astigmatism will have a number from 1 to 180 on their prescription that determines the orientation of their astigmatism correction.
For multifocal prescriptions. This number indicates the added power needed to correct your near vision if your prescription is primarily for distance correction.
FAQ
The average PD for adults is anywhere from 57 mm to 65 mm. There isn'a a normal PD as everyone is different and this number can widely differ from person to person.
Your PD won’t be found on your physical frames. Instead, you may find it on your prescription given to you by your eye care professional. If not, please follow the steps above to help you find your PD!
A person’s PD will change over time as they grow and mature. But once they stop growing, PD’s may change slightly or may not change at all.
Your PD only affects the shape of your lens but will have no affect on the shape of your frame.
