User:Durveshpushkar

The crystalline :- anatomy of lens the lens is transparent biconvex structure placed between eyes and vitreous in a saucer- shaped depression in patellar fossa its diameter is 9-10 mm and thickness of lens is 3.5 mm (at birth) and it very with age. The weight of the normal lens birth 65 mg is about 125 mg at 9 year and 255 mg at 40-80 yeras the lens is a transparent biconvex structure in a eye that along with tha cornea it help to retract the light to be focused on the retina the lens by changing the shape functions to change the focal distance of the eye so ot on focus on object at various distance it allows a sharp rear image of the object of interest to be formed on the retina this adjustment of the lens is k/a accommodation it is similar to the focussing of a photographic camera by a movement of its lens. Lens is more flat on anterior side then on posterior side like it has got two surfaces anterior surface and posterior surface the anterior surface has 10 mm of curvature and posterior surface has 6mm of curvature the two surface meet at equator the refractive index is 3.9-1.41 and average the total refractive power in lens is about 16-17 diopter average the lens is also k/a aquater it means lens water. The films consists of lens capsule. Lens epithelium and lens fibre the lens is part of anterior segment of the human eye in front of the lens of the iris which regulate of amount of light entering into the eye. The lens is suspended by a suspensory ligament or zonules it is a ring of fibrous tissue that attached to the lens at each equator and cannot it to the colliery body posterior to the lens is the veterious body