A plano concave lens is an optical lens with one concave surface and one flat surface. It has a negative focal length, and can be used for light projection, beam expansion, or to increase focal length ...

Two pieces of legislation recently passed in Connecticut promise to improve patient care — one through the regulation of plano contact lens sales and the other through the legal delegation of eye ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact [email protected]. Back to Healio Legislation regulating cosmetic plano ...

Shanghai Optics manufactures high quality plano-convex lens; optical lenses with a positive focal length. These all-purpose lenses are available in a wide variety of sizes, substrates, and coatings, ...