A safety eyewear assembly includes safety eyewear and a prescription lens insert. The safety eyewear includes a frame having a brow bar configured to extend across the brow of the wearer and further includes a plurality of raised shoulders spaced along the brow bar, and a unitary safety lens removably mounted adjacent the outer surface of the brow bar wherein vertically extending venting channels are formed between the outer surface of the brow bar and an inner surface of the lens. The prescription lens insert includes a left lens frame configured for receiving a prescription lens, a right lens frame configured for receiving a prescription lens, and a sculpted connecting wire configured to be received in interfitting mating relation with at least one of the raised shoulders of the brow bar, and further configured to extend through the venting channels such that the sculpted wire is releasably captured between the outer surface of the brow bar and the inner surface of the lens.