In medicine, precisely controlled doses of UV light are used to treat a variety of conditions.
Phototherapy for Skin Conditions: Narrowband UVB (around 311 nm) is a common and effective treatment for skin diseases like psoriasis, vitiligo, and eczema. The UV exposure helps to slow down the rapid growth of skin cells and can help repigment the skin in vitiligo.
Vitamin D Synthesis: UVB exposure triggers the production of Vitamin D in the skin, which is essential for bone health. UV lamps can be used to treat vitamin D deficiency, particularly in regions with limited sunlight.
Dental Applications: UV light is used to cure dental fillings and bonding materials. It is also used in some teeth whitening procedures.