Cornea reshaping using a laser is the most usual mode of vision improvement (e.g. lasik or PRK). However, you may not meet the strict criteria when it comes to laser eye treatment like this and so other methods would be more suited.
Implantable contact lenses are common amongst these different methods. Basically, this process involves placing a premade plastic contact lens within the eye. The contact lens involved is very different from the traditional contact lens you may have used on a daily basis as an alternative to spectacles. Implantable contact lenses are designed to sit between the iris (coloured part of the eye) and the natural lens within the eye.
Wings are "attached" to the implantable lens for it to sit flawlessly and be held in place. Equipped with the specific power needed to right your vision, the center of the lens is round in shape. This power is set by your glasses Rx measured before the operation begins.
A local anaesthetic is necessary to get this slim piece of plastic into the eye. To calm down patients' nerves, mild sedatives can also be taken orally while the quick procedure takes place. To dilate the pupils and enlarge the hole where the implantable contact lens will be placed, another eye drop will be used; between the iris and lens.
There would be two small incisions to be cut at the edge of the cornea, each of which are about 3mm in length. A device which rolls up the artificial lens will be used to slip the implantable contact lens into this minor incision. The contact lens will then be ejected out of the implantation device once inside the eye, unfolded, of course. A metal prong inserted into the second incision is used to right the arrangement, as the lens is maneuvered to sit behind the iris.
The total time that the surgical process takes is around 30 minutes.
There are no stitches essential as the corneal incisions cure quickly on their own. Clear shields are set over the eyes to be removed the next day.
Implantable contact lenses receive many advantages over traditional laser eye treatment such as lasik.
For example, lasik cannot be performed on thin corneas as it involves reshaping the cornea so enough thickness is essential. Lasik also cannot be performed for those with moderate to elevated amounts of myopia (shortsightedness) or astigmatism for more of the cornea needs to be removed. A substitute would be implanted contact lenses.
Should the prescription shift after the operation, the implantable contact lens can still be removed and replaced with a brand new one. This procedure can be performed numerous times. Contrary to that, Lasik can only be done a llimited number of times as the cornea becomes thinner with each operation.
Nowadays, implantable contact lenses are becoming an increasingly regular refractive surgical process. As materials and lenses continue to beimproved and designed, this may very well be the touchstone in sight improved in the future.
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