Reuse Daily Contact Lenses Contact lenses are a convenient way to see clearly without worrying about glasses. They are also used for aesthetic purposes, such as changing your eye color. There are two kinds of daily contact lenses. True daily contact lenses are made to be thrown away each day and should not be worn longer than the manufacturer's guidelines. Attempting to reuse true daily contacts can result in eye problems. Rinse and reuse daily contacts can be reused daily for longer periods of time (usually two weeks) and require certain care.