YOUR PRESCRIPTION

Understanding your eye prescription helps you make informed decisions about your prescription safety eyewear.

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Worker wearing Ugly Fish Sentinel Femme prescription safety glasses in Olive Chocolate frame for industrial work
Worker wearing Ugly Fish Sentinel Femme prescription safety glasses in Olive Chocolate frame for industrial work

Reading Your Script

Right Eye / Left Eye

Your prescription is listed separately for each eye (R + L) because they often need different lens strengths. Your optometrist measures each eye individually to ensure you receive the clearest, most comfortable vision.

SPHERE (SPH)

This is the main power required to correct your vision. It can be either a minus value (-) or a plus value (+). Sometimes the power will show Plano or 0.00, meaning no correction is needed for that part of the prescription. Generally, (+) means long sighted (trouble seeing up close) and (-) means short sighted (trouble seeing in the distance).

CYLINDER (CYL)

This is for correcting astigmatism and will nearly always show as a minus (-).
If this is left blank, there is no correction needed as no astigmatism is present.

AXIS

Indicates the angle (in degrees from 1 to 180) for your astigmatism correction.
This will be blank if there is no Cylinder.

ADD (Addition)

If additional magnifying power is required for reading and other close up tasks, it will be shown as an ADD value. An Add is used in bifocal and multifocal (progressive) lenses to provide clear near vision.

PUPIL DISTANCE (PD)

This is the distance between the centres of your pupils, measured in millimetres. It is used to correctly position your lenses for clear and comfortable vision. It's not always on your prescription, but essential for ordering.

Prescription Example

Prescription Examples

FAQ's About Your Optical Prescription

What if I still do not know what my prescription means?
If you're unsure how to read your prescription, contact us before placing your order. The PSG team can help you understand your prescription and choose the right lens type.
Your PD is required to ensure your lenses are made accurately. If your prescription doesn't include your PD, your optometrist will be able to provide it.
Not always. Some prescriptions are better suited to certain frame styles. If your prescription isn't suitable for your selected frame, we'll contact you to discuss the best options.
Your prescription will usually indicate the lens type you need. If your prescription includes an ADD value, you'll generally need bifocal or multifocal lenses. If you're unsure, the PSG Team is happy to help.
Most people should have an eye test every two years, or more often if recommended by their optometrist or if you notice changes in your vision.
Higher prescriptions may not be suitable for wrapped frames due to the frame's curved design. If your prescription isn't compatible with your chosen frame, the PSG Team contact you to discuss suitable alternatives.

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