Volk® 20D BIO lens, silver ring, 46°/60° FOV, 3.13x image mag., 0.32x laser spot, 50.0mm working distance, ideal for imaging of the macular and optic disc | Ambler Surgical
20D lens PMMA (oDocs Optics) – oDocs Eye Care
New 20D Lens Blue Color With Box & Manual Bio Fundus Lens For Eye Examination | eBay
Volk® 20D BIO lens, blue ring, 46°/60° FOV, 3.13x image mag., 0.32x laser spot, 50.0mm working distance, ideal for imaging of the macular and optic disc | Ambler Surgical