Infrared radiation between 1100 and
1300 nanometer had been found to be
successful in curing nail fungus
(onychomycosis). Applying sufficient heat
can killed the fungi. In order to penetrate
the skin deep enough even in the area
below the nail, a laser was the most
effective source of radiation since it
produced the least heat outside the
wavelength area that penetrated the skin
deepest. Usable lasers were 1064 and
1320 nanometer Nd:YAG lasers.
Treatment of nail fungus was advised to
be performed by or under the supervision of a physician.