Definition of Crystalline lens. Meaning of Crystalline lens. Synonyms of Crystalline lens

Here you will find one or more explanations in English for the word Crystalline lens. Also in the bottom left of the page several parts of wikipedia pages related to the word Crystalline lens and, of course, Crystalline lens synonyms and on the right images related to the word Crystalline lens.

Definition of Crystalline lens

Crystalline lens
Lens Lens (l[e^]nz), n.; pl. Lenses (-[e^]z). [L. lens a lentil. So named from the resemblance in shape of a double convex lens to the seed of a lentil. Cf. Lentil.] (Opt.) A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure. Lenses Note: Of spherical lenses, there are six varieties, as shown in section in the figures herewith given: viz., a plano-concave; b double-concave; c plano-convex; d double-convex; e converging concavo-convex, or converging meniscus; f diverging concavo-convex, or diverging meniscus. Crossed lens (Opt.), a double-convex lens with one radius equal to six times the other. Crystalline lens. (Anat.) See Eye. Fresnel lens (Opt.), a compound lens formed by placing around a central convex lens rings of glass so curved as to have the same focus; used, especially in lighthouses, for concentrating light in a particular direction; -- so called from the inventor. Multiplying lens or glass (Opt.), a lens one side of which is plane and the other convex, but made up of a number of plane faces inclined to one another, each of which presents a separate image of the object viewed through it, so that the object is, as it were, multiplied. Polyzonal lens. See Polyzonal.
Crystalline lens
Crystalline Crys"tal*line (kr?s"tal-l?n or -l?n; 277), a. [L. crystallinus, from Gr. ????: cf. F. cristallin. See Crystal.] 1. Consisting, or made, of crystal. Mount, eagle, to my palace crystalline. --Shak. 2. Formed by crystallization; like crystal in texture. Their crystalline structure. --Whewell. 3. Imperfectly crystallized; as, granite is only crystalline, while quartz crystal is perfectly crystallized. 4. Fig.: Resembling crystal; pure; transparent; pellucid. ``The crystalline sky.' --Milton. Crystalline heavens, or Crystalline spheres, in the Ptolemaic system of astronomy, two transparent spheres imagined to exist between the region of the fixed stars and the primum mobile (or outer circle of the heavens, which by its motion was supposed to carry round all those within it), in order to explain certain movements of the heavenly bodies. Crystalline lens (Anat.), the capsular lenslike body in the eye, serving to focus the rays of light. It consists of rodlike cells derived from the external embryonic epithelium.

Meaning of Crystalline lens from wikipedia

- The lens, or crystalline lens, is a transparent biconvex structure in most land vertebrate eyes. Relatively long, thin fiber cells make up the majority...
- designed to provide the same light-focusing function as the natural crystalline lens. This can be an alternative to LASIK, but LASIK is not an alternative...
- of the crystalline lens but do not remove the crystalline lens capsule (the outer "bag" layer of the crystalline lens). The crystalline lens capsule...
- postoperative retinal detachment because of the preservation of the crystalline lens and minimal vitreous destabilization. PIOL insertion is an intraocular...
- eye's natural lens is usually replaced with an artificial intraocular lens (IOL) implant. Over time, metabolic changes of the crystalline lens fibres lead...
- forming a zonule (little band) that connects the ciliary body with the crystalline lens of the eye. The Zonular fibers a viscoelastic cables, although their...
- the natural lens of the eye that has developed a cataract, an opaque or cloudy area. Over time, metabolic changes of the crystalline lens fibres lead...
- Phakic IOL: Phakic intraocular lens are lenses that implanted inside eye without removing the normal crystalline lens. Phakic IOLs can be used to correct...
- change in the density of the crystalline lens nucleus that occurs in all older animals. It is caused by compression of older lens fibers in the nucleus by...
- eye, which includes the eyelid, sclera, conjunctiva, iris, natural crystalline lens, and cornea. The binocular slit-lamp examination provides a stereoscopic...