Cataract Surgery: A Complete Guide to the Procedure, Implants, and Recovery

If you experience blurred vision, glare, or altered color perception, an ophthalmologist has likely mentioned this possibility to you. This comprehensive guide will walk you through it step-by-step and answer all your questions: what is cataracts, how the surgery is performed, which implant to choose, what the post-operative care entails, and how much the procedure costs in Switzerland.

What are cataracts and why is surgery necessary?

Cataracts are defined as a progressive clouding of the lens, this small, natural, transparent lens located behind the iris (the colored part of the eye). The lens plays an essential role: it focuses light onto the retina to allow for clear vision at all distances. When it becomes opaque, less light passes through, and vision becomes blurry, much like looking through a dirty or fogged-up window.

Key symptoms

The manifestations of cataracts appear gradually:

• a blurred or hazy vision, like looking through a fog
• a decreased color perception, with colors appearing dull or yellowish
• some glare significant, especially at night with car headlights
• a double vision (monocular diplopia) sometimes experienced in one eye
• a progressive decline in distance vision which becomes bothersome in daily life
• a frequent need to change eyeglass prescriptions without lasting improvement

Causes and Risk Factors

Cataracts are primarily linked to the natural aging of the lens and most often begin around age 65. However, they can occur earlier in certain situations: diabetes and other metabolic diseases, prolonged corticosteroid use, eye trauma, excessive ultraviolet exposure, smoking, or genetic predispositions. There are also much rarer congenital forms in infants.

Why Operate?

To date, no medical treatment can reverse cataracts. Surgery is the only effective option. The decision to operate depends not only on the stage of cataract development but primarily on the functional impairment experienced by the patient: difficulty reading, driving, recognizing faces, or loss of independence in daily activities.

What Does Cataract Surgery Involve?

The cataract surgery involves removing the clouded lens and replacing it with a transparent artificial lens, called an intraocular lens (IOL). This technique, known as phacoemulsification, has become the standard in modern ophthalmic surgery.

Step-by-step procedure

The procedure involves several precise steps:

1. Pupil dilation using specific drops to allow access to the lens.
2. Local anesthesia by instilling anesthetic drops (eye drops); no injection is necessary in the vast majority of cases.
3. Micro-incision of the cornea (approximately 2 mm) to access the lens.
4. Lens fragmentation using ultrasound (or femtosecond laser-assisted).
5. Aspiration of fragments of the clouded lens.
6. Placement of the intraocular lens into the emptied capsular bag. The implant, usually made of flexible acrylic, is inserted folded through the micro-incision and then unfolds into position.
7. Spontaneous closure of the incision, which usually requires no stitches.

The operation typically lasts 10 to 15 minutes per eye, is completely painless and is performed as an outpatient procedure (without hospitalization). The patient returns home a few hours later, accompanied by a relative.

Different types of intraocular implants

The choice of implant is a crucial step as it will determine your quality of vision for years to come. Several options exist, and the decision is made in consultation with your ophthalmologist based on your eye, lifestyle, and visual expectations. To learn more about the available options, please consult our detailed page on premium pseudophakic intraocular lenses.

Monofocal implants

These are the most common implants, some of which are covered by basic insurance. They correct vision at a single distance, usually distance vision. The patient will need to wear glasses for reading or for intermediate vision (computer screen). They offer excellent optical quality and very good contrast.

Multifocal implants

These high-end implants correct both distance, intermediate, and near vision, often allowing patients to completely forgo glasses. They are particularly suitable for active patients who no longer wish to depend on corrective lenses. However, they can cause luminous halos at night for some patients. They are not suitable for all eyes and require a thorough preoperative assessment.

Extended Depth of Focus (EDOF) Lenses

EDOF lenses offer continuous vision from distance to intermediate, with fewer nocturnal side effects than multifocal lenses. They are a good compromise for patients who want to reduce their dependence on glasses without experiencing luminous halos. Find detailed characteristics on the page dedicated to Dr. Hammer's premium lenses.

Toric Lenses

Specifically designed for patients with astigmatism, they correct corneal astigmatism in addition to cataracts. They can be monofocal, multifocal, or EDOF, depending on the patient's needs.

Refractive Cataract Surgery

When cataract surgery is combined with a refractive goal, meaning the aim is to minimize dependence on glasses, it is referred to as refractive cataract surgery. This personalized approach combines premium lenses and, if necessary, a corneal laser enhancement. For younger patients not eligible for cataract surgery but wishing to correct significant ametropia, refractive alternatives also exist, such as implantable contact lenses (ICL/IPCL) or SMILE laser surgery or LASIK.

Before the operation: the consultation and preoperative assessment

A thorough preoperative evaluation is essential before any operation. During this consultation, your ophthalmologist performs several examinations: visual acuity measurement, biomicroscopic examination of the lens, ocular biometry (precise calculation of the power of the implant to be inserted), corneal tomography and aberrometry, fundus examination, and macular OCT to ensure the absence of other pathologies.

It is also at this time that you will discuss with the surgeon the type of implant most suitable for your case, the expected benefits, potential risks, and the detailed quote. If you wear contact lenses, you will be asked to remove them several days before the measurements to avoid skewing the calculations. To benefit from a comprehensive assessment performed by an FMH specialist expert in corneal, cataract, and refractive surgery, you can make an appointment directly with Dr. Arthur Hammer in Lausanne.

During and after the operation: what you need to know

On the day of the procedure

You arrive at the clinic on an empty stomach. A nurse will instill drops to dilate the pupil and prepare the eye. The operation itself lasts about fifteen minutes. You will remain under observation for a few hours before returning home, ideally accompanied by a loved one.

Returning home

A protective shield transparent is placed over the operated eye for the first night to prevent any involuntary rubbing during sleep. You will leave with an eye drop prescription (eye drops) to be instilled several times a day for four weeks: two anti-inflammatory and antibiotic eye drops to prevent infection and calm postoperative inflammation.

Essential Post-Operative Recommendations

To promote optimal healing and prevent complications, certain rules must be strictly followed:

• Never rub or touch the operated eye, even if it itches
• Always wash your hands before instilling the drops
• Use clean disposable tissues to wipe the eye
• Keep the protective shield on at night during the first week
• Do not drive for the first 24 to 48 hours at a minimum, until your ophthalmologist confirms you are fit to drive
• Avoid for at least 4 weeks : sports, swimming pool, sea, hammam, hooded hairdryer, eye makeup, and any head immersion underwater

Visual recovery

Visual improvement is generally rapid and dramatic : average vision the day after and very good vision after a few days. Complete stabilization, however, takes 3 to 6 weeks, for the eye to heal completely. New glasses (if necessary) are prescribed approximately one month after the procedure.

Medical follow-up

A first check-up is performed the day after the operation. A second appointment takes place one week, then one month and three months later. This follow-up allows for verification of proper healing and early detection of any complications.

Possible complications: a very low risk

Thecataract surgery is today one of the safest surgical procedures. Serious complications are extremely rare (around 1 in 1000), but should be known: ocular infection (endophthalmitis), intraocular inflammation, macular edema, retinal detachment, or posterior capsule rupture during the procedure. The vast majority of these complications, when they occur, are successfully managed.

In some cases, cataract surgery can lead to corneal endothelial decompensation, particularly in patients with fragile corneas. This complication, called pseudophakic bullous keratopathy, can be treated with an ultra-thin endothelial corneal graft such as the DMEK (Descemet's Membrane Endothelial Keratoplasty), a particular expertise of Dr. Arthur Hammer.

Secondary cataract

More common (10 to 20% of cases), secondary cataract refers to an opacification of the posterior lens capsule that occurs months or years after the operation. It is treated very simply, in a few minutes, with a YAG laser treatment, without hospitalization and without pain. Vision is often restored within hours.

When to seek urgent medical attention after the operation?

Certain symptoms should alert you and prompt you to quickly contact your ophthalmologist or an emergency service:

• sudden vision loss
• intense redness of the eye
• unusual pain or persistent pain
• appearance of black spots or flashes of light in the visual field

How much does cataract surgery cost in Switzerland?

Cataract surgery is covered by basic health insurance (LAMal) in Switzerland for an amount of approximately 1,900 CHF per eye, after deduction of the deductible and co-payment (10%). This coverage includes the standard procedure and may include a basic monofocal implant.

If you opt for a premium implant (multifocal, toric, extended depth of field) or a more modern monofocal implant, an additional cost to you is to be expected, not reimbursed by basic health insurance and generally not by supplementary insurance either. This additional cost varies between different clinics and is generally around 350 to 1,500 CHF per eye depending on the type of implant chosen. All options and their specificities are detailed on our page dedicated to premium intraocular lenses. A detailed quote is systematically provided during the pre-operative consultation.

FAQ: Frequently Asked Questions About Cataract Surgery

At what age is cataract surgery usually performed?

The surgery is most often performed after age 65, an age at which senile cataracts become bothersome in daily life. However, there is no age limit, neither minimum nor maximum. The procedure can be performed on very elderly patients in good general health, as well as on young adults with early cataracts related to a metabolic disease, trauma, or medical treatment. The decisive criterion is not age, but the functional discomfort experienced and the impact on quality of life.

Is cataract surgery painful?

No, the surgery is completely painlessIt is performed under local anesthesia, often requiring only simple eye drops, and the patient feels no pain during the procedure. At most, there may be a slight sensation of pressure or bright light. After the operation, some patients describe a subtle gritty or tingling sensation for a few days, which quickly disappears with the prescribed drops.

Can both eyes be operated on the same day?

Theoretically yes, but as a safety principle, a significant proportion of ophthalmic surgeons in Switzerland do not operate on both eyes on the same day. A delay of a few days to a week is generally observed between the two procedures. This allows for verification of the first eye's good recovery, ensures no complications have arisen, and, if necessary, allows for adjustment of the implant calculation for the second eye. In certain specific cases, it may be preferable to perform surgery on both eyes on the same day, such as for patients requiring general anesthesia, to avoid having two successive general anesthesias.

How long does it take to recover normal vision?

Visual recovery is rapid: vision improves the very next day after the procedure. Good vision is usually restored within a few days, but complete stabilization takes approximately 3 to 6 weeks. During this period, vision may fluctuate slightly. If refractive surgery is combined, the adaptation period may be a bit longer, as the brain needs to adjust to the new visual balance, especially with a multifocal implant.

Will I still need glasses after the operation?

This primarily depends on the type of implant chosen. With a standard monofocal implant, you will generally need to wear glasses for near vision (reading, screens). With a multifocal or EDOF implant, it is often possible to go without glasses in most daily situations. However, no implant guarantees 100% complete independence from glasses.

What happens if I also need surgery for glaucoma or another condition?

Cataract surgery can certainly be combined with other ophthalmic procedures, including glaucoma surgery or certain retinal or corneal procedures. This combination is assessed on a case-by-case basis by your surgeon, depending on your condition. In some cases, cataract surgery can even improve glaucoma control.

Can I drive after the surgery?

Driving is prohibited for at least the first 24 to 48 hours after the procedure. When you can resume driving is then decided by your ophthalmologist during the postoperative check-up, based on your visual recovery and the vision in your other eye. As long as your vision is not clear and stable enough, driving remains contraindicated.

Can cataracts return after surgery?

Once a cataract has been removed, it cannot reappear because the lens has been removed. However, in 10 to 20% of cases, a secondary opacification of the posterior capsule (the "bag" that holds the implant) can occur months or years later: this is called secondary cataract. It is treated in a few minutes with a painless YAG laser, without hospitalization or discomfort, and vision is restored and becomes clear again within a few hours.

Is the surgery covered by insurance?

Yes,cataract surgery is covered by basic health insurance (LAMal) in Switzerland, subject to the deductible and co-payment (10%). This coverage includes the standard procedure with certain basic monofocal implants. However, premium implants (multifocal, toric, EDOF) and some modern monofocal implants incur an additional cost to the patient, which is not reimbursed by basic insurance and usually not by supplementary insurance either.

What should I do if I experience pain or decreased vision after the surgery?

Any intense pain, significant redness, or sudden decrease in vision in the days following the operation should be considered an emergency. You must immediately contact your ophthalmologist or an ophthalmic emergency department. Prompt treatment, in most cases, resolves the complication without lasting visual impairment.

In conclusion

Cataractsurgery is a fast, safe, and particularly effective procedure that transforms patients' lives by restoring clear vision. Thanks to constant technological advancements (phacoemulsification, femtosecond lasers, personalized premium implants), the results are now excellent, with rapid recovery and a very low complication rate. If you suspect you have a cataract or if it has already been diagnosed, do not hesitate to make an appointment with Dr. Arthur Hammer, an FMH specialist in corneal, cataract, and refractive surgery in Lausanne, to discuss the optimal timing of the procedure and the available implant options.