The crystalline lens in the eye is a biconvex layer made largely of proteins. Unlike any other tissue, it contains more protein than any other organ in the body. The earliest lenses were made from glass, and now they’re made of plastics that are more durable and lighter than glass. Despite its complex design, lenses are still mostly out-of-focus, but newer models can correct this problem. The most important consideration in choosing a lens is its effectiveness and comfort.

The main function of eye lenses is to correct vision problems. They are korean colored contact lenses AU transparent and light, but also have a low density and are biocompatible. The material must also be cheap, biocompatible, and transparent. The ocular surface is often smooth and curved, and lenses must be cheap enough for most people to afford. All of these characteristics make a quality lens worth investing in. Ultimately, your vision depends on the quality of your eye lens.

The human lens is made of several layers that change its curvature when we focus on objects at different distances. The ciliary muscles and zonules in the iris control this process. As a result, we can focus on objects of different distances. Adaptation is an important function of the lens. To change focus, we must relax the lens. The refractive index of the lens is a gradient from 1.406 in the central layer to 1.386 in the outer layers.