This lens has four 64° mirrors for efficient visualization of the angle and a central optic for viewing the posterior pole. It is mounted on a handle for easy manipulation. This lens does not have an anti-reflection coating. New and pristine for every patient; no dust, scratches, fingerprints or water marks. Unlike traditional reusable lenses, Katena single use lenses have anti-reflection coatings, except where noted, and no water marks. Each lens comes in a sterile pouch. Single use lenses supplied in quantities of 10.