The letters PMS is short for Premenstrual Syndrome - a condition researchers suspect is a hormone disorder originating in the brain. Doctors have searched long and hard for the cause of PMS, and unfortunately without success. However, the most current theory involves the abnormal transmission of seratonin in the brain. Seratonin depletion is routinely tied to depressive symptoms due to lack of adequate sunlight. The importance of light for health has been acknowledged since the beginning of time in home remedy, as well as modern medicine.
Ultraviolet damage is cumulative.
Closing your eyes does not protect them from potential ultraviolet damage. The short-term health risk is corneal burn, which is a sunburn on the surface of the eye. These burns show up within a few hours of overexposure and are characterized by increased sensitivity, a burning sensation and excessive tearing. The effects are apparently temporary and usually disappear within a day or so. The long-term risks includes brunescent cataracts, which is a clouding or pigmentation of the lens within the eye.