What is trifocal lens replacement surgery?
Trifocal lens replacement surgery replaces the cloudy natural lens with an artificial trifocal lens, correcting vision at three different distances: near, intermediate (such as when using a computer), and far. Therefore, trifocal lens is a good option for patients who no longer want to wear glasses. Unlike older generations of lenses that forced patients to choose between seeing distance or seeing near, the trifocal lens offers a seamless visual experience.
Is trifocal lens replacement surgery safe?
For many years, trifocal lens replacement surgery has proven to be a safe and effective treatment worldwide. The trifocal lens replacement surgery involves using ultrasound to remove the cloudy natural lens and then implanting an artificial lens. Trifocal lens replacement surgery is a minimally invasive procedure performed under topical anesthesia. Most patients experience significant vision improvement within days after surgery and typically recover fully within a few weeks.
Who is the candidate for trifocal lens replacement surgery?
While we are passionate about the benefits of the trifocal lens replacement surgery, we are also committed to ethical medical advice. Not everyone is a perfect candidate for trifocal lens replacement surgery.
You are likely an candidate for trifocal lens replacement surgery if:
- You have presbyopia or cataracts and want to be free of glasses.
- You have generally healthy eyes (no severe glaucoma or macular degeneration).
- You have a lifestyle that requires good vision at all distances.
- You are seeking lens replacement in Hong Kong and want the most advanced option available.
However, if you have severe dry eye syndrome, irregular corneas, or advanced retinal disease, a different type of lens might be safer for you. If trifocal lens Hong Kong is not the right option for you, we will recommend an alternative that ensures the safety and quality of your vision.
Trifocal Lens Replacement Surgery Steps
1. Preparation of the Eye
The surgery is performed on an outpatient basis and usually takes 15 minutes per eye.
2. Removal of the Lens
The anterior lens envelope is opened in a circular fashion. Then the lens core is removed. The rest of the lens envelope remains and serves as a ‘holding apparatus’ for the new lens.
3. The Trifocal Lens
Each patient receives a trifocal lens that is ideally adapted to his or her individual needs. This well-tolerated artificial lens can remain permanently in the eye and is not visible.
4. Implantation of the Trifocal Lens
The surgeon inserts the new trifocal lens into the eye with an injector. The lens unfolds and is properly placed in the empty lens envelope by the surgeon. The trifocal lens corrects presbyopia in addition to other existing vision disorders (near-, farsightedness and astigmatism).
Trifocal Lens Features:
We use trifocal lens of the latest generation
- They have patented high-performance optics and open up the possibility for you to see everyday life clearly without any aid, providing high quality near, intermediate and distance vision.
The trifocal lens is manufactured with computer-controlled diamond tools
- This means the highest possible precision and optical premium quality for you.
The optics of the trifocal lens is manufactured using the patented SMP technology
- A special process reduces stray light phenomena, which always occur with trifocal lenses, to an absolute minimum. The positive effect: less glare and fewer halos! Aspherical optics provide optimized image quality and improved contrast vision.
Trifocal lens protect the sensitive retina and are optionally equipped with an extended light protection filter in addition to a UV filter.
- This protective function is used in ophthalmology, especially for the prevention of macular degeneration (AMD).
Comparison of Different Lenses
FAQs about Trifocal Lens Replacement
What are the differences between monofocal and trifocal lenses?
Monofocal lenses correct vision at a single distance, meaning patients may need to wear glasses after surgery to assist with near or far vision. Conversely, trifocal lens correct vision at all distances, including near, intermediate, and far. Patients experience a significant improvement in vision after surgery and no longer need glasses.
Single-distance correction vs. multifocal correction: Monofocal lens correct vision at a single distance, while trifocal lens provides clear vision at near, intermediate, and far distances.
Dependence on glasses: Trifocal lens significantly reduce patients’ reliance on glasses after surgery, while monofocal lens typically require glasses for activities such as reading or driving.
I have cataracts and presbyopia. Can trifocal lens replacement surgery solve both of these problems at the same time?
Yes!
Cataract surgery, which replaces the lens with an artificial one, can simultaneously correct nearsightedness, astigmatism, and presbyopia. After trifocal lens replacement surgery most people can see clearly at near, intermediate, and far distances, significantly reducing their reliance on reading glasses. A few may experience nighttime glare, especially in the initial postoperative period, and may still need glasses in dim lighting conditions, but overall, their dependence on glasses is greatly reduced.
How long can a trifocal lens last?
The Focused intraocular lens is designed to last a lifetime. The material used for the trifocal lens is highly durable and biocompatible, meaning the body does not reject it, and it does not degrade over time. Once implanted a trifocal lens Hong Kong, you don’t need to worry about whether you’ll need to replace it.
Is the trifocal lens visible to other people?
No, the artificial lens is implanted inside the eye, behind the iris (the colored part of your eye). It is completely invisible to the naked eye. The only way someone could see it is by using a specialized slit-lamp microscope, which is what ophthalmologists use during exams. You will look exactly like yourself, just without the glasses!
Is there an age limit for trifocal lens replacement?
There is no strict upper age limit for trifocal lens replacement surgery, provided your eyes are healthy enough for trifocal lens replacement surgery. We have successfully treated patients in their 80s who want to maintain an active lifestyle. If you are younger than 40, other vision correction methods like Presbyond LBV might be more suitable. A consultation for trifocal lens replacement is the best way to determine if the timing is right for you.
Can I rub my eyes after trifocal lens replacement surgery?
You must avoid rubbing your eye for at least two weeks after trifocal lens replacement surgery. The incision made during the procedure is self-sealing and very delicate. Rubbing can disrupt the healing process or even displace the new lens.
Will I still need reading glasses after a trifocal lens replacement surgery?
The primary goal of implanting a trifocal lens is to eliminate or significantly reduce your dependence on glasses for most daily activities. Clinical studies show that over 90% of patients achieve complete spectacle independence for daily tasks like reading menus, using smartphones, and driving. While extremely fine print in very dim lighting might still require weak reading glasses for comfort, the vast majority of your day-to-day activities will be glasses-free.
If I have astigmatism, can a trifocal lens correct that?
Yes, absolutely. During your pre-surgical assessment for trifocal lens replacement, we measure the magnitude and axis of your astigmatism. If necessary, we will order a toric lens that corrects both your presbyopia/cataracts and your astigmatism simultaneously.
Is the trifocal lens replacement surgery reversible?
Technically, an artificial lens can be removed and replaced, but trifocal lens replacement surgery is intended to be permanent. Explanting a lens is more complex than the initial implantation and carries higher risks. This is why our pre-operative assessment is so rigorous. We spend a significant amount of time measuring and planning to ensuring the lens selected is match for you, minimizing the likelihood of ever needing it removed.
Why do some people see "halos" at night with trifocal lenses?
Halos are a side effect of the physics used to create multifocal vision. The concentric rings on the trifocal lens split light to allow you to see at different distances. When your pupil dilates at night, light enters through these rings, creating the halo effect. However, this is a temporary phenomenon for most patients. As your brain adapts to the new way of seeing, the halos typically fade or become negligible over a few months.