Ophthalmic lenses possess unique properties like specific gravity, tensile strength, safety, ABBE Value, thickness, pitch and motion just to name a few. And each ophthalmic lens material has its own attributes like low price points, perfect for drilling, higher indices and HEV protection. Let's drill deep and explores plus, minus, cylinder, multifocal, progressive, prism and the material choices offered today. Come and join us as we explore the amazing characteristics of ophthalmic lenses.