A binocular snap on lens for conventional safety glasses having slits located in front of a users eyes through which the user can see. The snap on lens is configured to snap onto the safety glasses, and preferably stagnantly sealingly conforms to the safety glasses to create a stagnantly sealed interior space between the snap on lens and the safety glasses. The air in the interior space creates a stagnant air barrier that creates air resistance against airborne particles traversing the interior space and contacting the safety glasses. Another preferred embodiment comprises two monocular snap on lenses, each configured to snap onto a corresponding side of the safety glasses.
