Trifocal lenses correct three types of vision: close-up, intermediate, and distance.
You may be more familiar with correction for distances far away and near, but you likely use your intermediate vision quite often. When you look at an object that’s a few feet away, like a computer screen, you’re using intermediate vision.
Correcting all three types of vision may be necessary as you age. Trifocal glasses and some types of contacts can do this.
Trifocal Lens Surgery (Intraocular Lens)
Trifocal lenses, which are often mentioned by everyone recently, are actually multifocal and trifocal multifocal lenses in ophthalmology. These intraocular lenses, commonly referred to as “Trifocal Lenses Halk, have long been used for appropriate patients during cataract surgery. Intraocular lenses are divided into monofocal, multifocal and trifocal 3 focal.
Patients who wear monofocal monofocal lenses during cataract surgery do not generally use distant goggles after surgery, but use glasses for close reading.
Multifocal lens wearers do not have to wear glasses both distant and soon. In cataract surgery, people with multiple focus lenses can read without glasses, use computers and watch television, and continue their daily life without glasses.
During the cataract surgery, the doctor determines which lens will be suitable for the patient according to the structure of the eye.
What is Presbyopia?
Usually, after the age of forty, the lens inside the eye can begin to lose its flexibility, thicken and harden, which affects the ability of the eyes to easily focus on closely located objects. Presbyopia continues to progress with age.
Many patients do not like to wear glasses because they age their appearance and are impractical to use. In order to get rid of lenses and glasses, you can do the operation of transplanting a Trifocal IOLs once and for a lifetime. Patients with trifocal implants can easily read and write, do household chores and even drive a car. Thus, the quality of life of the patient is improved.
What Results can be Achieved with the Trifocal Lenses Surgery?
We can get quality vision at all distances. Using the latest trifocal lenses the patient expresses a huge visual satisfaction the following day of the surgery in most of the cases.
However, we cannot forget the fact that the result is not perfect in 100% of patients (as it is not in any medical procedure either)
The slight dissatisfaction may be due to the vision of some reflexes with the shape of circles around light focuses at night. As well as that, some patients may need glasses with one dioptre to aid their close vision when there is low light.
The main frustration is given in some patients whose vision suffers some vision quality defect called “optic alterations”. These may manifest in double vision of some objects or else in having difficulty to see at middle or close distances. In such cases the solution to the problem is not very complex, although it requires some surgery from an expert. The surgery consists of replacing the multifocal lenses by monofocal lenses. Thus the patient gets a quality long- distance vision but he still has to wear glasses for short and middle distance. Luckily those cases are very unusual. ICO has only had 1 out of 200 cases in the last years. Once the trifocal models have been used that statistic has lowered even more.
Trifocal Lens Benefits
Trifocal lenses can help you use all three types of vision so you can complete daily tasks without having to switch between different pairs of glasses or wear contacts in addition to single-correction or bifocal lenses.
There are a few conditions that may prompt you to consider trifocal lenses.
Presbyopia
Worsening close-up vision is a natural part of aging and often starts in middle age. This is a condition known as presbyopia. Vision correction is the only way to address this condition.
Cataracts
A cataract is a clouding of the eye lens that affects vision. IOLs can replace cataracts to correct this issue. If you’re having surgery to remove cataracts, consider discussing trifocal IOLs with your doctor.
Who can wear Trifocal Lens?
Generally, people who are over 40 years old, who have vision problems in the distance or soon or both and who want to get rid of their glasses for life are candidates for this operation. The age of onset of cataract has now decreased even earlier due to environmental conditions. Every eye with a multi-focus lens can see both far and close.
In younger patients, if the eye number is too high to be corrected by laser, Trifocal Lens treatment can be applied again.
If the person has a cataract and wants to see both the distance and the relatives without glasses without cataract surgery, then the Trifocal lens is the first choice.
People who have already been corrected by laser eye number can also be equipped with Trifocal lenses if they have trouble seeing far or close after cataract formation.
