The New Optisight Magnifying Visors are an improvement over the Optivisor we have been carrying. They offer three different lenses (3, 4 & 5 power) and a less cumbersome headband at a significantly lower price. The new visor features optically ground plastic lenses (think eyeglass lenses) which are less expensive than the optically ground glass lenses in the OptiVisor. Brings work closer into focus, reducing eye strain and fatigue and leaves hands free. Can be worn over your glasses.