How bright a flash is safe for the human eye?

[Sevo]

Google "Kleig Eye".

Klieg eye is a UV induced inflammation. But you won't get as much UV out of even the biggest studio flash rig as you got out of the carbon arc lighting used in early motion picture years.

[Jac@stafford.net]

When I was in the USAF and doing aerial reconnaissance on 10" roll at night our flashes were aerial bombs rather then strobes.

That's quite familiar. Sixties USAF?

(I have some Mazda 75 bulbs but am afraid to use them. )

[Bob Salomon]

That's quite familiar. Sixties USAF?

(I have some Mazda 75 bulbs but am afraid to use them. )

Early 60s Shaw and Eglin/Hurlburt

[Jac@stafford.net]

Me: mid-Sixties, RAF Upper Heyford

[Jason Greenberg Motamedi]

Jerry Spagnoli said at a workshop that he used a large bank of studio strobes ...

Much of his work with Chuck Close used 30,000 watt seconds. Jerry claimed that you could smell burning hair after the exposure.