The main components in an eye lens are water and protein.
An artificial lens, also known as an intraocular lens, is a precision optical component that is surgically implanted into the eye to replace the cloudy lens that was removed from the eye
. Human crystals, which are composed mainly of proteins and water, can become foggy or cloudy with age, and foggy crystals prevent light and images from being projected onto the retina.
An IOL, also known as an artificial lens, is a precision optical component that is surgically implanted in the eye to replace the cloudy lens that was removed, and is equivalent to replacing a lens. They are categorized into anterior chamber-fixed IOLs, iris-fixed IOLs, and posterior chamber-fixed IOLs according to the location where they are placed.
Usually, the best place to place an IOL is in the capsule of the natural lens, which is the position of the posterior chamber fixed IOL. According to hardness, there are rigid IOLs and collapsible IOLs. Rigid IOLs are not collapsible and require an incision (about 6mm) the same size as the optic of the lens in order to implant the lens in the eye.
To accommodate surgical advances, the materials used for IOLs have been gradually improved, and collapsible IOLs have emerged, which can be folded or even curled up. It is implanted with forceps or an implant, and once inside the eye, the folded IOL automatically unfolds and supports itself in its designated position.
Some Applications of Crystals in Other Fields
1, Optical Instruments: Crystals are widely used in optical instruments and optical devices, such as camera lenses, telescopes, microscopes and so on. They are used to adjust the focus of the light, enabling the image to be clearly presented on the light-sensitive element.
2, laser technology: lens plays an important role in laser technology. They can be used to adjust the focus and shape of the laser beam, as well as to change the direction of laser propagation.
3, communication and telecommunication: certain crystalline materials have photoelectric effect, which can be used as optical devices such as optical switches, optical modulators and fiber optic connectors, and play a key role in the field of communication and telecommunication.
4, medical surgery: the lens is used in eye surgery to replace or repair damaged or cataract lens to restore the patient's vision.
5, scientific research: lenses are widely used in materials science, optical research and development of optical devices. They are used to study the properties of light propagation, refraction, scattering, and the development of new optical materials and devices.