This standard applies to all plano power sunglasses and clip-on for general use intended for protection against solar radiation. This standard does not apply to: a) eyewear for protection against radiation from artificial light sources, such as those used in solaria; b) ski goggles or other types of eye protection used for sports; c) sunglasses that have been medically prescribed for attenuating solar radiation; d) products intended for direct observation of the sun, such as for solar-eclipse viewing