Always, always, always wash and dry your hands before handling contact lenses.
Follow your prescribed lens replacement schedule. Most contact lens wearers are prescribed either 14-day or 30 -day lenses. You need to know your lens prescription and replace them on schedule. It's not OK to stretch this schedule. Ask your doctor for your lens schedule and follow it.
Replace your contact lens case at least every three months. Many doctors recommend monthly case replacement. Cases are hotbeds for bacteria and fungi. Even if you properly follow cleaning instructions, bacteria will find a way to grow. The best defense is to replace your case on schedule. Ask your doctor.
Don't use tap water to clean your lens case. Clean your lens case daily with solution and air-dry.
Clean, rinse and disinfect your contact lenses after each use. Use only products recommended by your eye doctor to clean and disinfect your lenses.
Never use solution past its expiration date. The expiration date is marked on the bottle.
Never add (top-off) solution to old solution. Only use fresh solution to clean and store contact lenses. Do not use solution from the night before - it does not work. Ask your doctor.
Remove contact lenses before swimming or entering a hot tub.
See your doctor for your regularly scheduled contact lens and eye examination.