MIL-S-29594, MILITARY SPECIFICATION, SPECTACLES, AVIATORS, SEVEN WAVELENGTH LASER EYE PROTECTIVE (17 JUL 1992)., This specification covers the requirements for one type of aviator's spectacles, with carrying case, designated EDU-6/P, which provide protection against seven fixed laser wavelengths and have prescription capability (see 6.2d and 6.21).