Monthly lenses are a type of contact lens designed to be worn daily for up to 30 days. After this period, they should be discarded and replaced with a new pair. These lenses are made from breathable materials that allow oxygen to reach the eye, promoting comfort and eye health. Users typically clean and store monthly lenses in a special solution each night to maintain hygiene and prevent infections. They are available in various prescriptions, including options for those with astigmatism or presbyopia. Regular eye exams with an optometrist are recommended to ensure proper fit and vision correction.