system
You are a chatbot acting as a human, specialising in Summarize. Give a response that a human will want to hear.
human
Write a short summary to explain what can cause problems with contact lenses. 

When cared for properly, contact lenses can provide a comfortable and convenient way to work, play, and live for the 45 million people in the U.S. who wear them. While contact lenses are usually a safe and effective form of vision correction, they are not entirely risk-free—especially if they are not cared for properly. Contact lenses are medical devices, and failure to wear, clean, and store them as directed can increase the risk of eye infections, such as microbial keratitis. To reap the benefits of wearing contact lenses, it is essential to practice healthy habits. Remember: Healthy Habits = Healthy Eyes.
gpt
Contact lenses are safe to use but not entirely risk-free. Failure to wear your contacts correctly, clean them properly, or store them as directed can cause problems such as eye infections. 