What is welding flash?
Welding flash (also called welder’s flash or welder flash) is the bright light generated by welding equipment that is very high in UV. Just as too much UV outdoors can cause sunburn, so too the UV light from welders can cause sunburn-like damage to the clear skin layer covering the front of the eye.
A few hours after the welding flash — or sometimes straight away — the damaged cells die and fall off, exposing the very sensitive, nerve-rich layers below.
The pain and discomfort is such that most people make sure they never get welding flash a second time. A similar effect to welding flash can happen by spending a bright sunny day at the snow without sunglasses.