The employer must make sure each affected employee uses suitable eye or face protection against molten metal, flying particles, acids, caustic or other liquid chemicals, chemical vapors or gases, and light radiation that could cause injury; eye protection with side protection (detachable side shields are acceptable) where flying objects are a hazard; and, for employees who wear prescription lenses, protection that incorporates the prescription or can be worn over the lenses without disturbing them. Eye and face PPE must be marked to identify the manufacturer, give adequate protection against the hazards it is designed for, be reasonably comfortable, fit snugly without unduly restricting movement, and be durable, cleanable and capable of disinfection. Devices must comply with ANSI/ISEA Z87.1-2010, ANSI Z87.1-2003 or ANSI Z87.1-1989 (R-1998), or be shown by the employer to be at least as effective. Table E-1 is a guide to filter lens shade numbers for welding, brazing, soldering and cutting (denser shades may be used). Employees exposed to laser beams must be given laser safety goggles for the specific wavelength with optical density adequate for the energy (Table E-2, optical densities 5 to 8, taking the higher density between lines), and every laser goggle must be labelled with the wavelengths it is intended for, its optical density at those wavelengths and its visible light transmission.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.