What is Presbyopia?

By | 30 March 2021

What is Presbyopia?

Presbyopia is a nearsightedness problem that occurs in people over the age of 40 due to age. The lens inside our eyes has a structure that can change shape. Thanks to this special ability of this lens, when objects come close, they can swell and change their shape and increase the quality of vision. Presbyopia is how near vision occurs. After the age of 40, the eye begins to lose this ability gradually and the elastic structure of the natural lens inside the eye begins to deteriorate. This partially prevents the changes occurring in the eye during focusing in near vision.

What is a trifocal lens? Who does it apply to?

Some people use separate glasses for both near and far. Some people can see both near and far with a single pair of glasses. The trifocal lens is an intraocular lens that shows near and far together. The trifocal intraocular lens implantation technique is completely a cataract surgery. We apply the same procedures in trifocal lens surgery as we do in standard cataract surgery. In this surgery, the natural lens of the patient in the eye is removed and a lens suitable for the internal structure of the eye and will improve the patient’s vision is placed in its place. Unlike this surgery, a trifocal lens (showing near and far) is placed inside the eye instead of a standard lens (which only shows the distance, requires glasses for the near).

What are its advantages?

Trifocal lenses are lenses with focusing features, which can be called near-far and middle distance, depending on their design. This technology has been used in the world for many years, but very successful results are obtained with the new generation high-tech lenses we use today. The lenses used in these surgeries remain in the eye for life. In other words, it is not a lens like a contact lens that patients wear and remove. It is placed in the eye by the physician. It is not possible for the lens to be allergic or not accepted by the tissue.

To whom should trifocal lenses be applied?

Patients with cataracts can use these lenses if their eyes are suitable after a detailed examination. Not every patient’s eye may be suitable for this type of surgery. Occupational position, age, social activity, reading habit, and intellectual level of patients with cataracts are also important in patient selection. People who do not have cataracts and want to completely remove glasses from their lives can also be able to do their daily routine without glasses thanks to trifocal lenses. It is very important to inform the patient in detail before this surgery. The patient and the physician will get the best results from this surgery, which will be done with the appropriate patient selection, appropriate technique, the experience of the institution and the physician, and of course the correct lens selection.

What affects success?

Lens selection and correct application is the most important aspect of this surgery. The type and degree of the lens to be applied to the eye of the patient, the angle to be placed on the eye and the exact determination of the lens number (which can correct both astigmatism and distance and near) according to the measurements made is an important and experience-requiring application. Eye protection is provided by using drops for a while after the operation. These drops should be used for about 3-4 weeks and the eye should be protected.

When will I return to normal life?

Almost all patients can return to their daily home and work routines 2-3 days after the operation.