This document is adapted from a fact sheet in the Safe Farm series produced by Iowa State University Extension. This fact sheet was updated February 1994. Long days outside in the warm glow of summer can be a serious hazard. In recent years, scientists have found that environmental pollution may deplete the earths ozone layer that protects the surface from the sun's harmful ultraviolet radiation. Researchers also are learning more about the relationship between these invisible sun rays and various forms of skin cancer and diseases such as eye cataracts.
Skin cancer is one of the most common forms of cancer in the United States.
The American Cancer Society estimates 600,000 new cases are diagnosed each year. About 6,700 Americans die each year from melanoma, the most serious skin cancer. Ultraviolet rays also can damage the eye's sensitive retina and cornea. Long-term exposure can cause cataracts, which can lead to permanent blindness or other visual impairments. These trends have serious implications for farmers and others who spend a majority of their working hours outdoors.