safety lens

safe·ty lens

a lens that meets government specifications of impact resistance; the increased impact resistance required for safety lenses is obtained by tempering, by an ion-exchange process, or by using laminated or plastic lenses.
Farlex Partner Medical Dictionary © Farlex 2012

safe·ty lens

(sāf'tē lenz)
A lens that meets government specifications of impact resistance; the increased impact resistance required for safety lenses is obtained by tempering, by an ion-exchange process, or by using laminated or plastic lenses.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Filipek, a 12-year veteran of the Mount Prospect Police Department and 17-year member of the Air National Guard, said he wants to bring a school safety lens to the school board.
WeeTect Material Limited is safety lens and visor manufacturer for OEM businesses.
Heat treatment is a way of giving glass the suitable impact resistance required for use as a safety lens. It is the preferred method of toughening glass used in the UK.
* Safety reviews: Similar to the check-in, attendees felt the safety reviews would enable the team to review plans and construction documents using a patient safety lens.