Do you ever forget when to throw out your current pair of disposable contact lenses? This product would be a contact lens replacement indicator, similar to the Brita filter change indicator. There would be a small sensor inside the contact lens cup, and a panel on the outside of the case indicating when it’s time to replace the used lenses. Cases would be available in two versions: 7-day or 30-day.

Lenses should be replaced after actual uses and not calendar days; for example, if you wear lenses every other day, you can wear monthly lenses for two months. Thus, this product would save money for such users, and for overly-frequent purchasers in general, by tracking usage. It would also help prevent deposit buildup and discomfort that can result from old contact lenses.

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