These details will need to be entered in the information fields of the product page:
(BC) Base Curve – This is a measurement of the curvature of the contact lens. Always done in millimetres, this figure determines how well a contact lens will fit the eye.
(DIA) Diameter – This is the width of a contact lens measured in millimetres.
(PWR/SPH) Power/Sphere – This figure indicates whether you are long or short-sighted, and how weak your vision is. Long-sightedness is indicated by a plus (+) and short-sightedness by a minus (-).
The higher the figure, the greater the visual correction.
For toric/astigmatism lenses, you’ll need to submit the following values:
(AX) Axis – An axis indicates the direction of the curve needed to correct an astigmatism. This will be a number between 0-180.
(CYL) Cylinder – Ranging from -0.25 to -2.75, this number determines the amount of power required to correct your astigmatism and is measured in dioptres.
For more information about the figures on your prescription and what they mean, click here.