A contact lens prescription is made up of specific data which we require to fill your order. All of this information is available on the packaging of the contact lenses you are currently wearing, or from your optometrist or optician.

Here is the information that we need:

OD = Right Eye
OS = Left Eye
Brand Name (e.g. Acuvue, Bausch & Lomb, Johnson & Johnson)
BC / Base Curve (a number between 8.0 and 10.0)
DIA / Diameter (a number between 13.0 and 15.0)
Power / Sphere / Rx (a number between -20 and +20)

For astigmatic patients, we also need:
Cylinder (a number between -4.00 and +4.00)
Axis (a number between 0 and 180)
Cylinder and Axis are usually separated by "X" and read as "times"

A regular prescription would look like this:

OS  Brand Name: Acuvue
OS  BC: 8.8 DIA: 14.4 SPHERE: -2.50

OD  Brand Name:  Optima FW
OD  BC: 8.4  DIA: 14.0  SPHERE: -2.75

A prescription for astigmatism would look like this:

OS  Brand Name:  Acuvue Toric
OS  BC: 8.8  DIA: 14.4  SPHERE: -2.50
OS  CYL & AXIS:- 1.25 X 180œ

OD  Brand Name:  Focus Toric
OD  BC: 8.7  DIA: 14.0  SPHERE: -4.50
OD  CYL & AXIS:- 0.75 X 95œ

This information may appear complicated but in fact it is very straightforward. Just consult your current contact lens packaging for reference.  If you need more assistance please contact our Customer Service Department.