Medical dictionary. 2011.
dioptric media — refracting media … Medical dictionary
History of the telescope — The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey and Zacharias Janssen, spectacle makers in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex… … Wikipedia
Refraction — In ophthalmology, the bending of light that takes place within the human eye. Refractive errors include nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. Lenses can be used to control the amount of refraction, correcting… … Medical dictionary
Eye — The organ of sight. The word eye come from the Teutonic auge. The eye has a number of components. These include the cornea, iris, pupil, lens, retina, macula, optic nerve and vitreous. The cornea is the clear front window of the eye that… … Medical dictionary
Allan Boardman — Professor Allan Boardman is well known both in the UK and globally for his work on surface plasmons and guided wave optics, especially nonlinear waves, solitons, magneto optics and negative refracting metamaterials. He is a leading theorist and… … Wikipedia
refraction — n. 1) the change in direction of light rays when they pass obliquely from one transparent medium to another, of a different density. Refraction occurs as light enters the eye, when it passes from air to the media of the eye, i.e. cornea, aqueous… … The new mediacal dictionary
Glaucoma — Glau*co ma, n. [L., fr. Gr. glay kwma, fr. glayko s light gray, blue gray.] (Med.) Dimness or abolition of sight, with a diminution of transparency, a bluish or greenish tinge of the refracting media of the eye, and a hard inelastic condition of… … The Collaborative International Dictionary of English
Range — Range, n. [From {Range}, v.: cf. F. rang[ e]e.] 1. A series of things in a line; a row; a rank; as, a range of buildings; a range of mountains. [1913 Webster] 2. An aggregate of individuals in one rank or degree; an order; a class. [1913 Webster] … The Collaborative International Dictionary of English
Range finder — Range Range, n. [From {Range}, v.: cf. F. rang[ e]e.] 1. A series of things in a line; a row; a rank; as, a range of buildings; a range of mountains. [1913 Webster] 2. An aggregate of individuals in one rank or degree; an order; a class. [1913… … The Collaborative International Dictionary of English
Range of accommodation — Range Range, n. [From {Range}, v.: cf. F. rang[ e]e.] 1. A series of things in a line; a row; a rank; as, a range of buildings; a range of mountains. [1913 Webster] 2. An aggregate of individuals in one rank or degree; an order; a class. [1913… … The Collaborative International Dictionary of English
