How To Convert Glasses Prescription To Contact Lens. Use our spectacle conversion calculator* to convert a patient’s prescription for glasses to the corresponding contact lens parameters. Need to convert your contact lens prescription to glasses?
Can i use my glasses prescription for contact lenses? Need to convert your contact lens prescription to glasses? The lens power is different as you move a lens further from the eye and the numbers will be different in a contact and glasses prescription beginning around 4.00 1.
* the calculator is designed to help eye care practitioners.
Hold a ruler in front of the person to be measured and have them look straight ahead. Hold a ruler in front of the person to be measured and have them look straight ahead. The lens power is different as you move a lens further from the eye and the numbers will be different in a contact and glasses prescription beginning around 4.00 1. It's very simple to do.