Can I Use My Glasses Prescription for Contacts?
No, and it is not a commercial technicality. A glasses prescription is missing three pieces of information nobody can guess, and even the numbers it does contain are the wrong ones above a certain strength. What is missing A spectacle prescription gives you power, plus cylinder and axis for astigmatism, plus an add for reading….
Dr. Teresita Bollar, OD
When Does a Contact Lens Prescription Expire?
One year is the federal floor, not the universal rule. Several states require two, and a prescriber can write less than a year only with a documented medical reason. The clock starts at issue, not at your first order. What federal law requires The FTC Contact Lens Rule (16 CFR Part 315) sets the minimum…
How to Read Your Contact Lens Prescription
A contact lens prescription has one job your glasses prescription cannot do: it describes a lens that sits on your eye rather than 12 mm in front of it. That is why it carries a base curve, a diameter and a brand name, and why the powers are not the same numbers. Every field, decoded…
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