This binocular magnifier can fit over glasses and magnifies 2 1/2 times at a distance of 8 inches. Perfect for us older pickers and anyone visually challenged. It helps you see the nits and gives you confidence that if you don't see nits, they really aren't there. This is a vital tool for the family determined to eliminate head lice. BONUS: we don't know why, but for some reason men are more willing to help nit pick if they get to wear one of these. AND The Vision Visor makes the removal of splinters or glass so much more accurate and easy. You can also use it to clearly read the fine print on lice removal product containers. Head Lice to Dead Lice Vision Visor VisionVisor$19.95 Email questions to: info@headliceinfo.com For specific questions regarding the protocol, please supply your order number.