Bisley 390 Clip-on Iris for Ordinary Glasses by Gehmann
- Improves depth of field vision for a clearer rearsight and foresight picture but allowing use of your own glasses for distance
- The iris is sprung-mounted on its plate to allow accurate positioning of the iris for quick and perfect alignment
- Iris leaves with our latest surface coating to eliminate oxidation and to preserve the matt black anti-glare finish
- Clips to your glasses with a spring loaded rubber clamp
- Can be easily flipped up (and stays up) for normal vision
