Tears moisten your eyes, lessen the risk of infection, and keep the eye surface (cornea) smooth and clear.
Sometimes your eyes don't make enough good-quality tears. This makes it hard for the eyes to stay healthy. Dry eyes can happen at any age, but are more common in people older than 65. Hormonal changes at menopause can also raise the risk of dry eyes in women. Other factors that may contribute are medications, contact lenses, and certain medical or environmental conditions, such as a dry climate.