The intraocular lens is the type of lens that people use in replacement of their natural lens upon operation. This is used for people who have cataract or myopia as their lens replacement one it is removed. This medical tool is being implanted during surgery of people with cataract conditions. A cataract is a condition of the eye in where the lens of the eye tends to be cloudy, and it leads to a decrease in the vision of the person suffering. Cataracts can be developed in only one part of the eye, and for some, they develop in both eyes. The developing of the cataract is slow and happens over time.
The symptoms of this kind of disorder are having a blurry vision, seeing faded colors, sometimes double visions and seeing halos around a light. These are only some of its symptoms, and the cataract can be easily identified than other eye conditions. These often happen of elderly starting at the age of 40s. The Intraocular Lens or IOL creates a focusing function for the eye and serves as a normal standard lens. There are two types of IOL, and the first is the pseudophakic IOL in where they provide the same focusing function for the light like the natural lens that we have. On the other hand, phakic intraocular lens or PIOL, the second type of intraocular lens is a type of lens in which it is being placed over the natural occurring lens. This is mainly used in the refractive surgery and can change the eye’s optical control. This is mainly a treatment for people experiencing myopia or nearsightedness.
The intraocular lenses are made of flexible materials that the eyes can efficiently operate with. This consists of small plastic or synthetic lens covering with synthetic side struts that are known as haptics. The function of this is to be able to hold the lens in place on the capsular bag located inside of the eye. Upon the advancement of technology, some intraocular lenses are made to have monofocal lenses that are used to focus on distance visions and not only the occurring eye disorder needed to be formed. The intraocular lenses come on a variety of lenses. These are such multifocal intraocular lens. This type of lens is used to provide the patients with a higher point of focus in multiple properties from reading and far distances. And there is an adaptive intraocular lens that helps prove the patient in getting inadequate visual accommodation for the patient.
On the contrary to the success of the usage of the intraocular lens, several risks can be encountered during the surgery. Common risks are such loosening of the lens over time, infections, inflammation to the eyes, lens rotation and even night time halos. But these risks have a quite lower chance of encountering. From a research that was conducted by professionals, this treatment is said to quite safer than going with the conventional laser treatments in aiding. The advantage of having this kind of medical tools is that the patients tend to be less dependable on their glasses and creates more focus on their visions on different types of activities.
Specific qualifications are needed to be precise in getting this kind of medical tool. You can look up for the tips on the things needed to be considered down below.
Classifications of the States of the Eye (Before, During and After the Cataract Extraction)
Phakia. The method of having phakia IOLS is that this is to implant the lens without the need for removing the natural lens of the person. This is only to correct a refractive error from the eye of the patient. Meaning, when the person undergoes to this kind of method, his eye condition is not that severe and just needed to be adjusted.
Aphakia. Unlike the phakia method, the aphakia needs actually to remove the natural lens of the patient through surgery. This is performed to remove the cataractous lenses from the patient. The type of surgery that is given to patients with this condition is implanted secondarily in the eye. This method shows that the person who is undergoing this kind of surgery has a severe type of condition.
Pseudophakia. The pseudophakia method is used as a substitute with the use of intraocular lens from the natural lens that that patient has. This method is slightly severe from the phakia and less severe from the aphakia. This method is often done for cataract refractive error correction. But there is still a need to get rid of the cataractous lens from the patient.
Types of Intraocular Lenses
Classified by implanted location
Anterior Chamber IOLS. This type is usually used if the person needs a phakic IOL. This is the least common and not usually used. It can serve as a substitute if there is no PCIOL available.
Posterior Chamber IOLS. In the United States, this is used after a cataract surgery, and it is said to be the most known type of IOLS.
Classifies by Technical Specifications
Toric IOL. This is used for dual purposes other than cataract surgery. This is to correct corneal astigmatism from the patient who is encountering both conditions. This method is best for people with withholding astigmatism condition and cataract. The process includes a laser procedure that they use to treat astigmatism.
PIOL. This is known to be called as implantable contact lenses. The reason behind this description is that this is only to be placed right above the natural lens of the patient. There is no need to remove the defective lens. This is mainly used for correction. The attachment of the PIOL in the eye will depend on the site of the eye it should be attached to.
Pseudophakic IOL that address Presbyopia. These are the monofocal lenses of the lens which comes with a multifocal focus that allows the user of this medical tool to create a proper vision and for both long distance area and adjacent areas. This is an improved version of the conventional intraocular lenses.
Multifocal IOL. The multifocal IOL tends to let the patient have a farther view focus. Amid the advantages that the multifocal IOL create, it has various unwanted effects that you may encounter such as; halos. You tend to be less sensitive in contrast. Low light conditions may also be encounters and even glare. The tool is not fully conditioned, and various things needed to improve, so taking this will be at your own risk.
Accommodating IOL. Like the multifocal lenses, the accommodating IOL have to focus ability for both near and distant areas. On the other hand, they are less likely to create success. There are some needed to be developed.