Orion 5942 AstroGoggles
Spend a half-hour wearing AstroGoggles before using your telescope, then take them off just before peering into the eyepiece. Your eyes will already be dark-adapted! Put on Orion AstroGoggles when you go inside during an observing session to retain your dark-adapted vision while inside under houselights. Air vents eliminate fogging. Large enough to wear over eyeglasses. Elastic band.