The Field Optics Research's Spotting Scope EyeShield for spotting scopes is the universal spotting scope accessory that connects to the eye piece of any spotting scope less than 2" in diameter. The Eyeshields are designed to block peripheral light and distractions, reduces lens glare, and protect your eyes from the elements while allowing you to achieve improved clarity and focus. These Spotting Scope EyeShields are optimized to fit most Leupold, Nikon, and Bushnell spotting scopes.