Optrex
... Oolrex Oof rex 6 DANGER SIGNALS OF WARTIME EYESTRAIN Slower Sight Reactions Dull Whites Puffy Eyelids Dislike of close work End-of-day Headaches 0 Black-out Nerviness In normal times you work your eyes for sixteen hours a day. In times like these you expose them to the extra strain of wartime conditions sudden changes from bright lights to complete darkness, unusual working and living ...