In a previous post you explained what are multifocal intraocular lenses and what they are used for. At Clínica Bavaria we always work to improve the quality of life of our patients, so our R & D department is concerned to test the latest innovations that companies specializing in optics and ophthalmology launch to the market. One of these are the so-called Trifocal intraocular lenses (which allow to focus on short, long and intermediate distances) and that came out to the market at the end of 2010. Clínica Bavaria was a pioneer in its use in refractive surgery and our ophthalmologists have participated in international studies in which the clinical results of these lenses have been analyzed. In addition, our R & D Department has conducted a study with the results obtained by our ophthalmologists specializing in refractive surgery and cataract surgery in patients with trifocal lenses since 2011. These achievements have been highly satisfactory, particularly with regard to two aspects:
– On the one hand, we have found that most of the people intervened with a trifocal lens implant recover their full vision range and are often able to perform any activity without using glasses or contact lenses.
– On the other hand, the trifocal lenses are an advance in the minimization in the appearance of nocturnal halos (circles of light around the foci). These halos were much more common in those surgeries that were performed with multifocal lenses from a previous generation and, in some cases, affected the final visual outcome.
Clínica Bavaria’s medical team performs multifocal intraocular lens interventions since the year 2005. In all this time, we have found that the choice of lens type depends, to a large extent, on the patient’s visual preferences in terms of their daily activities: a person who reads a lot will require a lens with greater addition for the next vision, while That for the patient who uses a lot the computer will be better a lens that provides a good average vision or a person who leads, it will be important to keep a good vision from afar. The Trifocal lenses are an advancement in this direction and one more option to guarantee the optimal results of the operation.
For all these reasons, in Clínica Bavaria, as a pioneering company in ophthalmology, we have opted for the use of the implant of intraocular lenses trifocals, which are already a proven option and suppose a great advance in quality and capacity of vision and satisfaction of Patients.
What are the focal intraocular lenses and what are their main characteristics?
Multifocal intraocular lenses are a type of multifocal lenses that are used in people who suffer from presbyopia (tired eyesight) and/or cataracts and who also have other visual problems (myopia, hyperopia and/or astigmatism)-in this case they will be Trifocal O-Ring lenses. The objective is for the patient to stop depending on their glasses and lenses and have a good vision to perform tasks at any distance (close, distant and intermediate).
The first intraocular lenses that were implanted were used in cataract interventions and were monofocal lenses that provided the patient with a single visual focus. That is to say that after the surgery that person could only see well without glasses from afar and needed glasses to carry out tasks at close distances (not corrected the presbyopia or tired view). These monofocal lenses are still used in cataract operations of people passing from a certain age range.
Later on, multifocal multifocal and O-ring lenses appeared, with which, after the operation, a good near and distant vision was achieved, but they were not useful for the intermediate vision. In addition, with the O-ring lenses, the astigmatism was corrected.
At present, multifocal multifocal lenses are used in most ophthalmology clinics (although monofocal and bifocal lenses are also still used). These trifocal lenses condense the light and take advantage of it at a distance of three foci: by far, intermediate and closely.
What are they used for?
These lenses are usually indicated by ophthalmologists for myopic or hyperopic who suffer from presbyopia or tired eyesight (i.e., older than 45 or 50 years) and who want to stop depending on the glasses and contact lenses. With a single lens and in a single surgery, myopia or farsightedness is corrected, in addition to presbyopia and, furthermore, the future appearance of cataracts is prevented.
How are they implanted?
The process is similar to any cataract surgery and consists, basically, in the removal of the crystallines that have been deteriorated by the passage of the years and the implant of the intraocular lenses trifocal.
- The contents of the lens are extracted using a technique called phacoemulsification.
- The folded lens is implanted into the crystalline capsule, which the surgeon has retained for this purpose.
- The lens unfolds and focuses on the place where the crystalline was before.
It is ambulatory surgery (the patient is not admitted to the clinic) and requires only topical anesthesia (in the form of drops).
What results are obtained?
The Trifocal vision is usually pretty good the day after the intervention. After a few days the brain will adapt perfectly to the characteristics of the lens (visual neuroadaptation) and the patient will be able to see without glasses or contact lenses at all distances.