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Almost everyone has presbyopia at some point
In older people, presbyopia is the most common ametropia in humans at 95 percent. Actually, it is not a disease at all, but an age-related loss of function of the eye. Structures in the eye tire in the course of life and sharp vision nearby as when reading is only possible to a limited extent. Many people then use varifocals, but some of them have problems with the new visual aid. For them and everyone who does not want to wear glasses, there are so-called multifocal lenses. They are used by the ophthalmologist during an operation and restore the lost eyesight.
With presbyopia, the lenses lose their elasticity. "You can no longer flexibly adjust to different distances," explains ophthalmologist Dr. Robert Löblich from the Artemis Eye Clinic Frankfurt. “The point at which images are just being recognized is moving farther and farther away.” Glasses then help to be able to read the small print again. Progressive glasses are popular with many people, with which they can be seen well at close as well as at a distance. Glasses of these visual aids are ground in such a way that ametropia is compensated for by the upper area of the lens and presbyopia in the lower area. "This is practical for many, since they only need glasses, but there are also disadvantages," says Dr. Praiseworthy. “It takes time for the brain and eyes to get used to the glasses.” This sometimes leads to headaches, dizziness and blurred vision.
In addition, the focus area depends on the viewing direction. Affected people often take their heads back to read texts. This can lead to shoulder and neck pain. When walking up stairs, however, the steps are only blurred when looking through the vicinity of the glasses. Studies have shown that when switching to varifocal glasses, the risk of falling is doubled. Especially elderly people with gait insecurity or dizziness should not wear varifocal glasses in everyday life.
Those who have problems with the varifocals or who are simply bothered by the "nose bike" can have their ametropia corrected surgically. "Depending on whether presbyopia also includes astigmatism, myopia or farsightedness, there are different methods," explains Dr. Lens surgery procedures, such as the insertion of multifocal lenses, fulfill most patients' dream of having no glasses. These implanted multifocal lenses work like varifocals in the eye and enable sharp vision at different distances. However, since the patient's field of vision is not restricted and the far and near vision is independent of the viewing direction, patients usually have no problems getting used to. However, the lenses can sometimes have the disadvantage that stray light can occur at night. The focus of the method is to achieve a higher quality of life in everyday life.