Biotrue ONEday for Astigmatism

I Have My Prescription

Enter your prescription when you add your contacts to the cart. You can also upload an image of your most recent prescription during checkout.

I Don’t Have My Prescription

Add the box quantity you need to the cart without entering a prescription.

If you have a prescription from another doctor, add the box quantity you need to the cart without entering a prescription. Then let us know your doctor’s information during checkout. We’ll contact them to validate the prescription.
Quick tip: If you have a current box of your contacts, check the side of the box for your prescription.

I Wear a Different Lens in Each Eye

Order just the right or left eye by setting the quantity to 0 for the eye that you DO NOT need. Repeat the same for the other lens that you need.

Here is a typical contact lens prescription:

Here are the definitions of the symbols used:

Additional Information About Prescriptions

1. A contact lens prescription is not the same as an eyeglass prescription. In addition to the lens power,your contact lens prescription contains several other pieces of information related to the size of the lens.
2. Your prescription has an expiration date that is typically one year from the date you were fitted for your contact lenses.
3. BC values range from about 8.0 to 9.5. The doctor fits the lens with the curvature most appropriate for your eye. Most lenses come in several different BC values. If your prescription does not contain a BC value, this is likely because your brand of lens only comes in one base curve.
4. BC values are a bit like clothes sizes - just because you are a BC 8.6 in one brand doesn’t mean you will be in another.
5. If you wear a toric lens your prescription will contain two additional columns entitled cylinder and axis. These numbers are related to the correction of your astigmatism.
6. Even the power of the lenses is generally not the same as in your eyeglass
7. Even the power of the lenses is generally not the same as in your eyeglass prescription. This is because:
   1. The contact lens sits on the surface of your eye, while your eyeglasses sit about 12 mm in front of your eye
   2. Regular soft contacts do not correct for your astigmatism, but your eye doctor will typically try to partially correct for it by changing the power of the lens.

Still have questions?

Please contact us.