DON'T share your contact lenses. As fun as it may sound, never swap colors with your friends. Contact lenses are medical devices and are fitted to the specifications of each individual's eyes.
Exchanging lenses also can transmit harmful bacteria, which can lead to a serious, vision-threatening eye infection.
DO care for your contact lenses properly. Color contacts, like clear contact lenses, must be properly cleaned, disinfected and stored with appropriate lens care products to avoid contamination. And don't forget to replace your lenses according to your eye care professional's instructions.
DON'T wear your contacts if you develop sore, irritated or red eyes. This may be a symptom of a contact lens-related eye infection or other serious problem. Contact your eye doctor immediately if you experience discomfort during or after contact lens wear.