| SPH | CYL | AXIS | PRISM | BASE |
|---|---|---|---|---|
| Distance | ||||
| +2.25 | -1.00 | 65 | - | - |
| Near | ||||
| ADD | +1.50 | |||
SPH (sphere)
A + in the box indicates that you are long-sighted which means you find it difficult to see things close to you. A – shows that you find it hard to see things that are far away without glasses. The number might be very small, like 0.25, or a large number, like 6.00. The higher the number, the stronger the prescription lenses required. This can influence your choice of frames. The higher the prescription, the greater the curve of the lens needed.
CYL (cylinder)
The amount of astigmatism (visual distortion) that is caused by an irregularly shaped cornea. An empty box means there is no astigmatism and your eyes are perfectly spherical. A low number like 0.25 means your eyes are not quite round and a higher number like 3.00 means your eyes are quite oval.
AXIS
The direction of the astigmatism, measured in degrees. This is more for the lab to know how to position your lenses.
PRISM
This usually indicates that your eyes do not work well as a pair. Prism lenses will provide the correction you need and help prevent double vision or headaches.
BASE
The base simply tells the lab where to put the prism in your glasses.
Noticed a change in your eyesight?
If you have any concerns about your eye health, contact or visit your local optometrist immediately – even if you do not have an appointment.
Discover more
What is OCT?
It’s an advanced 3D eye scan that helps your optometrist spot eye conditions early.
Your store visit explained
Here's what to expect when you come in to see us for an eye exam