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Frequently Asked Questions
What Constitutes a Contact Lens Prescription and
When Does a Prescription for Contact Lenses Expire?

According to the New Hampshire Board of Optometry law, RSA 327:25-a, V, a contact lens prescription shall expire one year from the date of issue, unless otherwise specified by the prescriber for health reasons.

There are two sites that you should review that will give you the necessary information. The first is from the FTC called "The Contact Lens Rule: A Guide for Prescribers and Sellers" which can be found at The second is the NH Optometry Law, RSA 327:25-a which discusses the specifics of "Contact Lens Prescriptions to be Provided to the Patient" which can be found at

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