<unk> , also known as<unk>  flash, welder's flash, corneal flash burns, or flash burns, is a painful ocular condition sometimes experienced by welders who have failed to use adequate eye protection.  It can also occur due to light from tanning beds, light reflected from snow (known as snow blindness), water or sand.  The intense ultraviolet light emitted by the<unk>  causes a superficial and painful keratitis.
Symptoms tend to occur a number of hours after exposure and typically resolve spontaneously within 36 hours. The sensation has been described as having sand poured into the eyes.
This phenomenon results from intense levels of illumination by ultraviolet light, different than that of more common over-illumination found in many factories and offices.
Arc eye
Surfer's Ear
Mind's eye
Eye circles
Swimmer's ear
Audios
Black eye
Red eye 