Cataract Surgery: Procedure, Risks, and Postoperative Care

Cataract surgery is one of the oldest eye procedures. As far back as ancient times, doctors attempted to remove the clouded lens in cases of cataracts to improve vision. Modern cataract surgery was developed in the 18th century by Jacques Daviel, who was the first to completely remove the lens. Today, cataract surgery is one of the most common procedures worldwide. Thanks to modern techniques such as phacoemulsification and the femtosecond laser, the lens can be gently broken up and replaced with an artificial lens. The procedure is usually performed on an outpatient basis, is painless for the patient, and in most cases leads to a rapid recovery of vision.

Clearly visible lens opacity in an elderly man © 2707195204 | AdobeStock

Cataract surgery is the standard procedure for treating cataracts. During the procedure, the clouded lens—which is responsible for blurred vision—is removed and replaced with an artificial lens. The goal of the surgery is to restore vision and achieve natural visual acuity.

There are two procedures used in cataract surgery: intracapsular and extracapsular cataract extraction. Today, the extracapsular method is used almost exclusively; in this procedure, the lens capsule remains in the eye. It serves as a holder for the new artificial lens, or intraocular lens. The procedure is performed under local anesthesia, often with twilight sedation, and is typically done on an outpatient basis.

The most common procedure is phacoemulsification. In this procedure, the clouded lens is broken up using ultrasound, aspirated, and then a foldable artificial lens is implanted. Alternatively, a femtosecond laser can be used to precisely break up the lens while sparing the surrounding tissue. This form of cataract surgery is considered particularly gentle and low-risk.

After cataract surgery, the new lens remains permanently in the eye. Intraocular lenses are designed to sit securely within the capsular bag and provide lasting clear vision. Depending on the type of lens, additional refractive errors can be corrected, for example, using multifocal or toric lenses. The entire procedure usually takes only a few minutes, and most complications are rare.

Cataract surgery is performed by experienced ophthalmologists and is considered one of the most successful procedures in modern ophthalmology. Many patients notice a significant improvement in their vision as early as the day of the surgery, and the risk of complications is very low.

The Anatomy of the Eye © bilderzwerg | AdobeStock

Before cataract surgery, the ophthalmologist carefully assesses whether surgery is necessary and when the right time for the procedure has arrived. The procedure is one of the most common surgeries for cataracts and is usually performed on an outpatient basis. Its success depends on various factors, such as the patient’s overall health and the course of the surgery.

A thorough diagnostic evaluation takes place before the surgery. The doctor examines the eye, determines the refractive power, and calculates the strength of the new lens, which will later correct vision. Patients with cataracts are also screened for other eye conditions, such as glaucoma, to minimize the risk of complications.

Local anesthesia is tailored to each patient’s needs, and sometimes twilight sedation is used to ensure the procedure is comfortable for the patient. With cataracts, the eye is usually just cloudy, but if the cataract is left untreated, vision will permanently deteriorate. Therefore, cataract surgery should be performed in a timely manner.

The ophthalmologist explains the different types of lenses available. In addition to standard lenses, toric or multifocal lenses can be implanted to correct refractive errors. These intraocular lenses are inserted into the capsular bag after the clouded lens is removed, where they settle into their final position.

Preparations for cataract surgery are carried out under sterile conditions. The day of the surgery is carefully planned, and the operated eye is subsequently protected with an eye patch. A follow-up visit with the ophthalmologist can take place as early as the next day. The healing process depends on various factors, but most surgeries proceed without complications.

Immediately after the procedure, postoperative care begins with eye drops to prevent inflammation. Weeks after the procedure, the ophthalmologist re-examines the patient’s vision and the position of the new lens. Years after the surgery, a so-called secondary cataract may form in rare cases, but this can be easily treated with a laser.

The artificial intraocular lens is only a few millimeters in size. Ideally, it is anchored in the eye’s natural lens capsule using its two suspension arms © Axel Kock | AdobeStock

Cataract surgery is considered a routine procedure in ophthalmology. The surgery is usually performed on an outpatient basis under local anesthesia or twilight sedation. The procedure takes about 15 to 20 minutes per eye.

First, the eye is numbed and disinfected. The surgeon then makes a tiny incision in the cornea. In modern phacoemulsification, the clouded lens is broken up using ultrasound and suctioned out. The lens is then replaced with an artificial lens, which is positioned in the lens capsule.

Alternatively, a femtosecond laser can be used to make the incision and break up the lens with exceptional precision. This laser treatment is considered gentle and reduces the risk of complications.

Cataract surgery is one of the safest procedures worldwide. After the surgery, the operated eye is protected with an eye patch. The first follow-up visit with the ophthalmologist takes place the very next day after the surgery. Most surgeries proceed without complications, and vision often improves immediately after the procedure.

The healing process depends on various factors, such as the type of lens, the structure of the cornea, and the patient’s overall health. Patients with cataracts can usually see well again within a few weeks after the procedure.

Immediately after the procedure, the eye is initially protected with an eye patch to prevent irritation. The first follow-up appointment with the ophthalmologist takes place the very next day after surgery. During this visit, the ophthalmologist checks the position of the new lens and assesses vision.

In the first few weeks after the procedure, eye drops are applied regularly to prevent inflammation and infection. The healing process is usually uncomplicated, and most patients can see clearly again just a few days later.

The operated eye should be rested during the first few days. Rubbing or applying pressure to the eye should be avoided. Most complications, if any, occur shortly after surgery, such as mild swelling or a temporary sensation of a foreign body in the eye.

A secondary cataract may develop years after surgery if the remaining lens capsule becomes cloudy again. This clouding can be treated painlessly with a laser. After treatment, vision improves significantly once more.

If you have any questions about the course of the surgery or persistent symptoms, you should always consult your doctor. They will check whether the eye has healed properly and whether the new artificial lens has reached its final position.

In Step 1, the natural lens is removed. The foldable artificial lens is then implanted (Steps 2 and 3) © alexonline | AdobeStock

Cataract surgery is considered a very safe procedure that is usually performed on an outpatient basis at an ophthalmologist’s office. Complications are rare, although cataract surgery always requires a precise approach. The risk of complications depends on the patient’s age, overall health, and the advanced stage of the cataract.

The surgery places minimal strain on the eye, as it usually takes less than 30 minutes, and vision improves significantly as early as the day after the procedure. In some cases, surgery can be performed on both eyes a few weeks apart if cataracts have progressed in both eyes.

During the procedure, the clouded lens is removed and replaced with an artificial lens. This allows patients to see clearly again and corrects the natural aging process—namely, lens clouding. Most surgeries proceed without complications, and patients are often able to resume their daily activities just one week after surgery.

Infections, swelling, or a secondary cataract rarely occur. A secondary cataract develops when the lens capsule becomes cloudy over time. This clouding can be easily treated with a laser. Mild irritation or temporary vision impairment may also occur, but these symptoms usually subside quickly.

The costs of cataract surgery are generally covered by health insurance. Patients who choose special types of lenses, such as multifocal or toric lenses, often have to cover the additional costs themselves. If you have any uncertainties, you should clarify with your health insurance provider before the surgery which services are covered.

Overall, cataract surgery is one of the most successful procedures in modern ophthalmology. After cataract surgery, vision is usually permanently stable, and the eye quickly adapts to the new lens. This means that the prognosis is excellent even in cases of advanced cataracts, provided the surgery is carefully planned and performed.

When is cataract surgery necessary?
Cataract surgery is necessary when the lens becomes increasingly cloudy as a result of the natural aging process and impairs vision. As soon as patients can no longer see clearly due to cataracts or their vision appears blurry, ophthalmologists recommend scheduling surgery. The procedure is possible even in advanced stages of cataracts and significantly improves vision.

How is cataract surgery performed?
The surgery is usually performed on an outpatient basis at a specialized ophthalmology practice under local anesthesia or twilight sedation. Throughout the procedure, the clouded lens is broken up using ultrasound and then suctioned out. It is then replaced with an artificial lens that remains in the eye permanently. The procedure causes minimal discomfort to the eye and takes about 15 to 20 minutes per eye.

What happens after cataract surgery?
Immediately after the procedure, the eye is protected with an eye patch. As early as the day after surgery, during the first follow-up visit, vision may already be significantly clearer. Eye drops help promote healing and prevent inflammation. About a week after the surgery, the eye is usually completely free of irritation, and many patients can see well again.

What does health insurance cover for cataract surgery?
Health insurance generally covers the costs of standard cataract surgery and a monofocal lens. If patients wish to have special types of lenses, such as toric or multifocal lenses, they usually have to pay the additional costs themselves. It is advisable to clarify the specific scope of coverage with your health insurance provider before the surgery.

What are the chances of a successful recovery after cataract surgery?
Most surgeries proceed without complications, and the risk of complications is very low. As early as the day after surgery, many patients notice a significant improvement in their vision. A few weeks after the procedure, the eye is fully healed, and vision is stable. Only in rare cases may a secondary cataract or slight clouding occur, which can be easily treated with a laser.