the present invention relates to partial rim eyewear or eyeglasses having impact resistant prescription lenses and mechanically secured to the frame . the eyeglasses are particularly useful for athletic activity because they are lightweight and offer a wide field of vision because they do not comprise of a full rim . the lenses are to be prescription either tinted , or clear , with or without coatings that may be preferred for use with athletic activities . the mechanical lock attachment to secure each lens in place can include adhesives or double sided adhesive tape , notches in the partial rim frame with corresponding protrusions in the lens , with or without a lock clip engaging the lens and a locking pin engaging the lock clip ; and / or a screw , adhesive or double - sided tape . advantageously , the lenses are impact resistant and are securely attached to the frame via these different mechanical attachments . the mechanical attachments can be constructed so that it is difficult to remove it from the frame , making or is a permanent attachment , thereby securely locking the lens in place even under severe impact . in additional embodiments , the mechanical lock attachment can include a double bar support or a single bar support . the double bar support pivots over the lenses and is locked to the frame with a pin or screw or other method . the single bar support is positioned over the lenses and is locked to the frame with a bar clip , pin or screw engaging the nose piece , and double sided adhesive tape can be added for additional strength .