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How to Read and fill out the prescription

PLANO /PL on my prescription

" Plano" or " PL" means there's no strength for Sph in your prescription. Just leave it as a zero or Plano when entering the prescription on the order form on our website.

SPHERE/SPH /DS under CYL on my prescription

BALANCE/BAL on my prescription

Progressive Prescription,how to read it for different uses

For progressive or bifocal glasses, the prescription can be read as:

For single vision computer use, the prescription can be read as:

For single vision computer use, the prescription can be read as:

For single vision reading use, the prescription can be read as:

Followings are the rules of how to convert a multi-focal prescription to different uses.
To convert a multi-focal prescription with ADD values for single vision distance use, simply remove the ADD values. The correction for the astigmatism will not change, so the cylinder and axis will remain the same, regardless of the change in focal distance. Use the original distance PD listed in the prescription.
To convert a multi-focal prescription for single vision computer use, simply combine half of the Add number and the Spherical number (If the Add cannot be split evenly, such as ADD +2.25, both +1.25 and +1.00 can be used to convert the prescription). For example, if the Add were +2.25 and the OD-Sph was -0.50, the new OD-Sph for computer glasses would be +0.75; if the Sph were +0.25, the new Sph would be +1.50. Consequently, the Add will then become zero, the default. The correction for the astigmatism will not change, so the cylinder and axis will remain the same, regardless of the change in focal distance. Narrow the PD by 1-2 mm. If the PD of your basic prescription is 29.5/31.0, the PD for computer glasses would be 29.0/30.5 or 28.5/30.0
To convert a multi-focal prescription for single vision reading glasses, simply combine the Add number and the Spherical number. For example, if the Add were +2.25 and the OD-Sph was -0.50, the new OD-Sph for reading glasses would be +1.75; if the Sph were +0.25, the new Sph would be +2.50. Consequently, the Add will then become zero, the default. The correction for the astigmatism will not change, so the cylinder and axis will remain the same, regardless of the change in focal distance. Narrow the PD by 3mm. If the PD of your basic prescription is 29.5/31.0, the reading PD would be 28.0/29.5.

SPHERE/SPH /DS under CYL on my prescription