Sorry another quote. Frank from Varanus.net
There is no available information regarding the benefits or drawbacks of providing UV lighting for monitors. Most lights available that produce UVA or UVB produce minuscule amounts of these rays. I have raised monitors with both UVA and UVB and some without UVA and UVB lighting and have not been able to determine any differences. If you want to provide this type of lighting go ahead but it is not necessary.
WALTER @ Mice & Things