The task of screening for head lice often falls to teachers or volunteers who have no medical background or training. Since nits can be smaller than a sesame seed and are often transparent, they are often difficult to find even for trained medical personnel.

A new device called Nit Lite™ is a tool that makes finding nits easier. This device uses ultraviolet light and a magnifying lens to make it easier to see head lice nits on the hair shafts.