Visiball lens technology makes your golf ball perceptively brighter and the background darker, causing the "glow" effect.

Visiball Golf Ball Finding Glasses are not X-ray glasses, meaning that if your ball is completely hidden behind a tree it will not become visable by using Visiball Glasses.

Fortunately, most errant golf balls are not hidden from line-of-sight and Visiball Glasses greatly increase the likelihood (and speed) of finding lost balls in the rough or underbrush.