To lessen the need for spectacles or contact lenses, phakic intraocular lenses, also known as phakic lenses, are lenses composed of silicone or plastic that are surgically inserted into the eye. Phakic describes the process of implanting a lens into the eye while removing the normal lens of the eye. A little incision is created in the outermost part of the eye throughout phakic lens implantation surgery. Through the cut, the phakic lens is introduced and positioned immediately in front of or next to the iris.
To repair refractive errors in the eye's focusing ability—phakic IOL lenses are used. All phakic lenses that the FDA has authorized are used to treat nearsightedness.
Similar to how a camera's lens concentrates light to produce an image on film, the cornea and natural lens of the eye concentrate light to produce an image on the retina. Refraction is another name for how light is bent and focused. Images on the retina become blurry or out of focus as a result of refractive errors, which are flaws in the eye's focusing ability.
With the use of the phakic intraocular lens (IOLs), greater degrees of myopia, hyperopia, and astigmatism that were previously untreatable can now be treated through refractive surgery. Here are some Phakic IOL advantages:
The normal lens of the eye is left in place when phakic intraocular lenses are implanted. Contrastingly, intraocular lenses are inserted into the eyes after a cataract surgery has been performed to eliminate the eye's hazy natural lens.
The side view of the eye is depicted in the depiction of how phakic lenses operate as if you were peering inside after cutting it in half from front to back. It displays how the cornea and lens of an eye without refractive error focus light from a stop sign onto the retina. It shows how the optic nerve transmits the crisp retinal image of the stop sign to the brain. We can perceive an item when light rays concentrate on the retina.
The crisp retinal picture of the stop sign is seen getting sent to the brain by the optic nerve in the inset image. This is an idealized representation of how the phakic lens redirected the focused picture onto the retina by twisting light through the stop sign. The nearsighted eye perceives distant things with greater clarity when light rays are diverted by the phakic lens into the retina.