Patent ID: 7500750

Claim:
A method for tracking the wearable life of an ophthalmic product, said ophthalmic product having expiration data, said method comprising the steps of: providing on or within said ophthalmic product at least one data carrier for carrying data related to said ophthalmic product, said data carrier having a first device operable in a magnetic and/or electrical mode; providing an activation signal from an external means; activating said first device with said activation signal to cause said first device to emit said data in response to said activating signal; recording said time said first device is activated; processing said received data to determine the wearable life of said ophthalmic product, based on the lapsed time between said time of activation and said expiration data; and wherein said ophthalmic product is one of a contact lens, an intra-ocular lens, or a lens for eyeglasses.