- concave lens periscopic
- convexoconcave l.
Medical dictionary. 2011.
concave lens periscopic
Look at other dictionaries:
Lens — The transparent structure inside the eye that focuses light rays onto the retina (the nerve layer that lines the back of the eye, senses light and creates impulses that go through the optic nerve to the brain). The lens was named after the lentil … Medical dictionary
convexoconcave lens — a lens that has one convex and one concave surface; the convex surface is of greater curvature than the concave. Called also periscopic concave l., diverging meniscus l., and negative meniscus l … Medical dictionary
concavoconvex lens — a lens that has one concave surface and one convex; the concave surface is of greater curvature than the convex. Called also periscopic convex l., converging meniscus l., and positive meniscus l … Medical dictionary
Meniscus — The word meniscus comes from the Greek and refers to a crescent shaped structure. Today a meniscus is something that is shaped like a crescent moon or a croissant pastry. A meniscus can be an anatomic feature. For example, the medial meniscus of… … Medical dictionary
