The bright light overwhelms the retinas of the eyes and generally gradually fades, lasting anywhere from a few seconds to a few minutes.
However, if the eyes are exposed to a high enough level of light, such as a nuclear explosion, the blindness can become permanent.
Flash blindness may also occur in everyday life.
How long does flash blindness last?
During the daylight hours, flash blindness does not persist for more than 2 minutes, but generally lasts a few seconds. At night, when the pupil is dilated, flashblindness will last for a longer period of time.
Can Flash damage eyes?
Yes, there are ways that extremely bright lights can damage someone’s eyes. However, photography flashes, at least for the vast majority of people in the vast majority of circumstances, aren’t harmful. There is something called “flash blindness,” when the retina gets too much light and you can’t see clearly.
How is flash blindness treated?
Treatment for flash burns may include:
- dilating drops – these are sometimes used to relax the eye muscles, which in turn eases pain and allows your eyes to rest and heal.
- dressing – your eyes may be covered with a padded dressing to rest them and allow them to heal.
- do not drive with an eye patch on.
Can welders flash cause blindness?
When welders don’t properly protect their eyes from the arc, they commonly suffer welder’s flash, or photokeratitis, a condition caused by exposure to intense ultraviolet radiation resulting in temporary blindness and extreme discomfort. More extreme eye injuries can result in permanent blindness.
Do potatoes help welders flash?
Surprising enough, but when it comes to welders flash treatment, potatoes are remarkable. The cool thing is: They offer a cooling effect which reduces inflammation around the itching eye.
Can flash blindness cause permanent damage?
However, if the eyes are exposed to a high enough level of light, such as a nuclear explosion, the blindness can become permanent. Flash blindness may also occur in everyday life.