Cleanliness is the top priority. Dirty hands mean dirty lenses, which cause irritation or, worse, injury to the eyes. Always wash your hands with soap and water. Before picking up your contacts and inserting them on your eyes, dry your hands thoroughly.
Don’t be tempted to use tap water. Instead, use a saline solution for rinsing your contacts. A cleaning solution is used to clean the lenses and the case where you store them. Your contacts case should be replaced once a month.
Make sure you visit your eye doctor for routine check-ups, which help discern when you need a replacement or a prescription change.