ASTM F 659

This specification covers the material, design, optical, and strength requirements, and associated test procedures for goggles and faceshields used by alpine skiers, to provide a reasonable degree of protection against foreign objects that strike or lodge the eye or surrounding soft tissue causing eye irritation or damage, as well as to minimize fogging and vision restrictions that distract or handicap the skier, thereby causing accidents. Contact lenses, sunglasses, and corrective dress eye wear are not included within the scope of this specification. When tested by the methods provided herein, these eye protective devices shall adhere to specified optical requirements in terms of field of view (temporal, nasal, superior, and inferior fields), luminous transmittance, refractive tolerances, astigmatism, refractive power imbalance, prismatic deviation and imbalance (vertical and horizontal imbalances), optical defects, and physical lens defects. The protective eyewear shall also meet light-transmitting ability requirements such as clearness, ultraviolet and infrared filtration, and resistance to fogging. Furthermore, lens strength shall be examined as well by means of basic impact resistance and higher impact resistance tests.