Nowadays these are very much known for using in everything. Like they are used to target missiles in outer space (remember the President Reagan initiative on this). They are used for spectacular light shoes. One of its uses is to treat those eye problems in patients with and they being used to zap the humble fungus that can infect the toe nails. The laser treatment for nail fungus is being done with increasing frequency despite does not know if it actually works. The treatment is expensive and not covered by insurance. A small clinical trial has shown that it can work, but the main clinical trials have not yet been done.