The human eye lens is made mostly of proteins and is the most protein-rich of all body tissues. These cells are transparent and flexible, and their primary function is to focus light onto the retina to create a sharp image. This is accomplished with the help of ciliary muscles, which help the lens to thin out when focusing on distant objects and to contract when focusing on close objects. To produce eye lenses that meet these specifications, different materials are used.
To maintain transparency, the eye lens must preserve its refractive index. The eye’s crystalline korean colored lenses AU lens must refract light so that it can focus on the retina. The crystalline lens changes shape during accommodation, the process by which the focus of a photographic camera is changed. The crystalline lens is flatter on the anterior side than on the posterior side, which is the part that focuses light on the retina. The structure of the eye’s crystalline membrane must be maintained in perfect optical conditions in order to ensure the correct refractive index.
The lens also needs to be in good shape to maintain its transparency. The ciliary muscle helps the lens change shape. The zonular fibers, or zonules, hold the lens in place. The ciliary body produces aqueous humor, a clear fluid that keeps the lens healthy. The aqueous humor drains from the trabecular meshwork and the cornea. The ciliary body also works with the cornea to refract light.