Intraocular Lens

Trifocal lenses, also called

Intraocular lens implant, have been used for suitable patients in cataract surgeries for a long time. Smart lenses are trifocal intraocular lenses that provide the opportunity to solve multiple focus problems, not a single focus problem. In this way, they can also be used in the treatment of patients with refractive errors whose eyes are not suitable for laser treatment. After the treatment, patients can do tasks that require focusing both at far and near distances on their own, without glasses.

70% of the focusing power of the human eye is provided by the cornea layer and 30% by the natural eye lens. In a healthy eye, the natural lens structure allows us to focus on both distant and close distances by stretching. As we get older, especially after the age of 40, many people lose eye flexibility and begin to have problems with near vision.

In modern society, the importance of clear vision for all distances cannot be underestimated. Especially actions such as using computers, watching television, looking at the phone screen and reading books are actions that have taken place in the routine of our daily lives. It is undeniable that problems experienced especially in near vision will reduce the quality of life.

The use of glasses and contact lenses are the first treatment methods used to correct near vision. Some patients do not want to wear glasses or contact lenses for various reasons. In addition, laser treatment is generally not suitable for patients over the age of 45. The recommended treatment method for these patients is smart lens operation.

Early cataract surgery with clear lens extraction. By doing this, the cataract problem that patients may experience in the future is prevented and they are enabled to have full vision at near, medium and long distances without glasses.

Another frequently observed condition, especially in older ages, is the loss of transparency of the natural eye lens. that is, cataract disease. Although there is a problem with distance vision at the beginning of the disease and you can continue to see clearly without the use of glasses, as the process progresses, near vision also deteriorates.

Permanent treatment of cataract consists of surgically melting the damaged natural eye lens and replacing it with an artificial intraocular lens. is to be installed. Intraocular lenses can also be used in the treatment of presbyopia (near vision problem).

These intraocular lenses have different types and are named according to their focal points. These are monofocal (single focus), bifocal (two focus) and trifocal (three focus) lenses.

Intraocular Lens

Smart lenses (trifocal intraocular lens) provide clear vision to patients at both near, far and intermediate distances. Thanks to intraocular lenses, patients can do all tasks that require watching television, using a computer and close reading with a single lens.

They eliminate the use of glasses for all these distances. These lenses, made of a special and flexible material, provide lifelong use from the moment they are placed into the eye.

What is Smart Lens? (Trifocal Intraocular Lens)

Smart lenses are trifocal intraocular lenses that are mostly used in the treatment of cataract patients over the age of 40, allowing patients to see far, near and middle distances clearly. After the operation, the need for glasses is eliminated for patients. Smart lenses are also known as trifocal lenses.

They can also be used for myopia, hyperopia and astigmatism patients whose eye structures are not suitable for laser treatment.

They used to be monofocal. Nowadays, smart lenses have been added to the single vision lenses used in cataract surgeries, which provide far and near vision. With the use of smart lenses in cataract surgeries, the need for extra glasses to be used by patients to see other focal points other than a single focal point has been eliminated.

Smart lens (trifocal intraocular lens) is used to improve the patient's field of vision and vision. It helps provide a clear and high-quality vision for the patient at all distances by stretching according to the point he wants to focus on at that moment.

Why Are Smart Lenses Needed?

Every person has a natural lens inside the eye, and this lens is both transparent and elastic. Thanks to its flexibility, this lens can change shape and focus on the distance viewed each time you look near or far. In this way, we see both far and near.

With advancing age, the natural lens inside the eye first loses its flexibility. After a while, he cannot change shape and focus while looking at close-up. As time passes, it loses its transparency and cataracts form.

Our natural intraocular lens, which loses its flexibility around the age of 40, can be replaced with a new one. An artificial lens called Smart lens is placed instead of our deformed natural lens. This new lens can now focus both far, intermediate and near. A patient with a smart lens (Intraocular Lens) will not develop cataracts in the future.

How Do Smart Lenses Work?

Light entering the eye from different distances is refracted through the natural lens in our eyes and converges at a single focal point on the retina. Thus, we can perceive the image. Our natural lens in our eyes does this by stretching itself according to different focal points. The same principles apply to the trifocal intraocular lens. It makes it possible to focus light coming from far, near and middle distance with a single lens. With Smart Lenses, it is possible to make appropriate adjustments to the focal lengths where a person has problems focusing. In addition, smart lenses can be chosen according to the person's eye type. In other words, smart lenses can be customized according to the person's needs. Thus, they eliminate the need for multiple glasses with different distances.

Smart Lens History

You can watch our documentary video to get information about the history of “Smart Lens from Past to Today”.

What are its areas of use?

Smart lenses are used in the treatment of cataract disease, which occurs due to the loss of transparency of the natural eye lens, or in the treatment of patients with age-related nearsightedness. It is a permanent treatment method for both cataracts and age-related nearsightedness. These treatments are based on the principle of removing the natural eye lens from the eye and replacing it with an artificial intraocular lens.

What are the Multifocal Intraocular Lens Types?

Monofocal lenses are lenses that allow us to see at a single viewing distance.

Bifocal lenses are lenses that help us see for near and far vision.

Multifocal lenses, that is, multifocal intraocular lenses. They are lenses that allow us to see at near, far and medium distances. The type of lenses called smart lenses are trifocal lenses, also known as multifocal.

Who Can Have Smart Lens (Intraocular Lens) Treatment?

Smart lens operation uses the same method as cataract surgery performed with the phaco method. Once the trifocal intraocular lens is placed in the eye instead of the natural eye lens, removing and replacing it again is a risky procedure and should not be performed unless necessary. At this point, various tests performed before the surgery, the suitability of the patient for the operation and the appropriate treatment for the appropriate patient are important. The purpose of using smart lenses is to ensure that the patient sees all distances in optimum quality.

If the patient has a dry eye problem, this problem should be eliminated before the surgery. People with macular degeneration are not suitable for this procedure. Those who have advanced eye pressure problems and diabetic retinopathy caused by diabetes are also not suitable for smart lenses.

The anatomical structure of the patient's eye is also a determining factor in terms of suitability for the operation. The patient's kappa angle, that is, the distance between the visual axis of the eye and the anatomical axis, is 0.4. It should be below mm. This ratio can be determined with optical biometry devices.

Patients over the age of 40 who have vision problems at distance or near or both and who have vision problems at intermediate distances are candidates for treatment. Each eye with a Smart lens will be able to see both far and near on its own.

For those younger than 35-40 years of age, if the eye number is too high to be corrected with laser, the Smart lens treatment can be applied.

People who have had eye laser surgery before can also choose trifocal lenses if they have decreased vision due to deformation of the intraocular lenses and problems with distant or near vision.

If If the person has cataracts and wants to see both near and far without glasses, this treatment can also be applied.

Are Smart Lenses Permanent?

Yes, smart lenses are permanent. The patient's eye number is fixed with intraocular lenses. Once these lenses are placed in the eye, the patient can use these lenses for the rest of his life. In other words, there is no deformation in these lenses depending on the age of the patient. For this reason, detailed examinations of the patient and accurate determination of the eye number before treatment are of critical importance.

How is a Smart Lens Compatibility Test Done?

Smart lens operation Beforehand, various eye tests and examinations are performed according to the patient's complaints. In these examinations, it is examined whether the patient has cataracts or refractive error problems.

First of all, a general eye examination is performed, which will take approximately 30 minutes. In this examination, visual acuity test and refractive errors are measured. Afterwards, the power of the intraocular lens is determined by biometry. Methods such as SPM and USM can be used in the detection of cataract disease and in the process of suitability for surgery.

In addition, methods such as tonometry, OCT, HTR determine whether the patient has a problem in terms of eye pressure. Finally, a fundus examination is performed to detect the presence of any retinal problems. Because diseases such as glaucoma, macular degeneration and diabetic retinopathy eliminate the possibility of smart lens treatment.

At the end of all these examinations, if the patient is suitable for trifocal intraocular lens, the patient is given an appointment for surgery.

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How to Perform Smart Lens Operation?

Smart lens treatment is the process of placing a multifocal lens during surgery on patients with cataracts. Thanks to this procedure, the patient's need for glasses after surgery is eliminated. The operation can be performed in an eye hospital or an eye center.

People over the age of 40 who do not want to use glasses, have vision problems near and far, and are not suitable for laser treatment can benefit from early cataract surgery with a smart lens, even if they do not have a cataract problem yet. Vision problems at different distances can be eliminated by inserting the lens.

The method used when performing smart lens surgery is the phacoemulsification method. Each eye is subjected to a procedure that takes approximately 10 minutes on separate days. First, the eye is numbed with anesthetic eye drops. In this way, patients do not feel any pain or ache during the procedure. There is no general anesthesia, fainting or hospitalization. During the operation, multifocal intraocular lenses are inserted into the lens socket inside the eye. After the surgery, the eye is bandaged and patients can go home. The eye remains bandaged for one night and the bandage is removed from the eye the next day. The patient begins to see on the same day. Within a few days, the same procedures are applied to the other eye and the treatment is terminated.