The most common type of contact lenses purchased are the monthly contact lenses. These lenses can be used for 30 consequential days from first use. Usually, monthly lenses must be removed at night and placed with cleaning fluid in a properly designed lens maintenance container. In the morning you can simply apply your lenses again. It is recommended to use specially developed eye drops to avoid dryness of the eyes and ensure your lenses will feel comfortable all day. Be sure to consult your optician before purchasing new types of contact lenses, he or she can tell you which type of lenses will suit you best.