What is holding the contact lens in place
Multifocal lenses for sharp vision near and far
Multifocal contact lenses combine different areas of vision in just one lens. This allows you to see clearly both near and far. There are several types of multifocal lenses: bifocal lenses, trifocal lenses, and varifocal lenses.
There is now the right contact lens for every ametropia. So-called spherical contact lenses are used to compensate for simple nearsightedness or farsightedness. However, these are no longer enough if you can see increasingly poorly at close range as you get older. Now you need multifocal contact lenses so that not only your ametropia is corrected, but you can also read properly close up again.
When you are young, the lens of your eye is still elastic: you can read a book without any problems and the next moment you can see an object clearly in the distance. This ability of the eye to accommodate decreases with age.
Multifocal lenses for presbyopia: Your eye lens loses its elasticity with age
As the lens of the eye becomes less and less elastic with age, it becomes more and more difficult for you to see clearly up close. You will notice this as soon as you have to hold the newspaper farther away than before or can no longer read a package insert. The technical term for this is presbyopia. This ametropia in old age is colloquially called presbyopia. It is often accompanied by the following symptoms:
- a headache
- Eye pain
- Pressure on the temples
- Dry eyes
- Red eyes
Reading glasses can help here and make the small print appear legible again. If you also need glasses for the distance, things get more complicated. Then you would theoretically need two glasses or varifocals. As a contact lens wearer, you can now switch to multifocal lenses so that you can see everything in the distance as well as in the vicinity.
What are multifocal contact lenses?
Multifocal contact lenses are also known as multifocal lenses or multifocal lenses. you correct more than a viewing distance. If there is presbyopia, you can correct it with the help of multifocal lenses. There are three different types of multifocal lenses:
Bifocal contact lenses: 2 prescriptions combined in one lens
A bifocal lens has two correction zones. For this purpose, segmented bifocal lenses are available in which the viewing area for the distance is located in the upper area and the viewing area for the near area is located in the lower lens area. These two areas of vision are directly below each other and do not have an intermediate area, as with the multifocal lens: If you look up through the contact lenses, you see in the distance sharply, if you look down, you can see objects in the vicinity clearly. To do this, the lens slides on the tear film of your eyes.
On the other hand, there are also bifocal lenses in which the two viewing areas for near and far are arranged in concentric circles: The viewing area for the distance is exactly in the center of the lens, while the near area is around it. Since there is no transition zone between the two areas of vision with bifocal contact lenses, you will not see objects at a medium distance clearly.
Trifocal contact lenses: 3 prescriptions in one contact lens
Unlike the bifocal lenses, trifocal lenses have a further field of vision for the intermediate distances. You can see clearly while watching TV, talking to a friend, and in the middle distance. As with the bifocal lenses, the individual areas of vision are one below the other.
In order for you to see clearly, the contact lenses must always be in the right position in the eye. Just like toric contact lenses, which correct astigmatism. Because of this, both the bi- and the trifocal contact lenses are slightly weighted in the lower area. The extra weight keeps the tiny lenses in place.
Varifocal contact lenses: The visual areas merge seamlessly into one another
Just like trifocal lenses, varifocals combine three different zones. Here, however, the alignment of the lens no longer plays a role, because all of them Zones of vision run in circles around the center of the lens. It is only important that the lens is centered in front of the pupil.
These viewing zones are responsible for both near and far vision. So there are always two equally sharp images - one in the vicinity and one in the distance. That's what we call it simultaneous principle or simultaneous principle. Of course, your brain has to get used to it first.
Nowadays, when we talk about multifocal lenses, we usually mean these varifocal contact lenses. Thanks to the simultaneous principle, you no longer switch back and forth between the individual, delimited viewing areas.
Can I easily buy multifocal lenses online?
These multi-range lenses only work if they be tailored exactly to your eye - You can buy multifocal lenses online, but they should always be adjusted by a professional. Simply go to one of our on-site opticians to have your new multifocal lenses individually adjusted.
In addition to your ametropia, factors such as the composition of your tear film, your day-to-day work and your leisure time play an important role in choosing the right contact lenses. We would be happy to advise you on this. As soon as it is clear which multifocal lenses you need, you can easily buy or reorder them online.
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