No solar UV-C reaches the earth's surface. The biological effects of the three regions vary according to hazard potential. The hazard can often be avoided by a change in habit, procedure, or lifestyle. The body tries to protect itself from UV light by tanning. Other deleterious effects related to UV overexposure include hardening of the outer layer of the skin, wrinkling, and skin cancer.
Eyes are also susceptible to UV damage.
Since the cornea acts as a filter, damage to the lens is reduced. However, cataracts can develop as a direct result of UV exposure. A 'UV light box' is literally a box with a glass top and a UV lamp inside. UV light is also used with an apparatus called a UV-crosslinker which is used to attach nucleic acids to surfaces or membranes. Use of any of these devices requires caution and the proper personal protective equipment.