Contact lenses offer individuals millions of dollars in convenience by freeing them from the weight of glasses while providing wider peripheral vision. As medical devices, they sit directly on the delicate cornea, one of the most sensitive and densely innervated tissues in the body. Daily habits that take only minutes to perform correctly can determine safe wear or serious infection risks such as microbial keratitis, a corneal infection caused by bacteria, fungi, or amoeba. It is essential to follow guidelines for cleaning and storing lenses, replacing them regularly, avoiding certain activities like sleep, swimming, and showering, and seeking immediate medical attention if signs of infection occur. Regular annual check-ups with an eye care provider can help identify early changes in the cornea and update prescriptions as needed to ensure safe and comfortable wear.