Safety

UV-A lamps operate with wavelengths between 315-400 nm, shorter wavelengths than this can cause injuries to the eyes. To prevent injury, a filter should be used which cuts out wavelengths below 315 nm.

Looking into a UV-A lamps will cause temporary clouding of vision due to the fluid in the eyeball fluorescing, it will normalise with no permanent effects after a few seconds, although it is important to note that prolonged exposure may cause cataracts, scarring of the retina or damage to the cornea.

Note: current medical advice is to avoid naked skin being under ultraviolet light, but for very brief periods, without sunblock etc. to avoid skin damage.