Frequently Asked Questions

What you should know about cataract treatment

There are a lot of questions you might have when it comes to cataracts and the associated treatment. Some of the most frequently asked questions are answered below. If you still wish to learn more about the disease or vision correction after reading through this overview and the website, please consult your ophthalmologist.


Can cataracts be treated medically or corrected with eyeglasses?

Unfortunately, a cataract cannot be treated with glasses or medication. The only effective method for treating a cataract is the surgical replacement of the eye’s clouded natural lens with an artificial one – called an intraocular lens (IOL).

Am I a good candidate for cataract surgery?

You should consult an eye care professional to determine if you suffer from cataracts and how far progressed the condition is. You will decide together if you are eligible for cataract surgery.

Is the surgery safe?

Cataract surgery is considered one of the safest surgical procedures today. However, as with all medical treatments, some complications may occur. Your eye care specialist will thoroughly discuss the potential risks with you.

How do I find the right doctor to perform cataract surgery on me?

An important part of cataract surgery is finding the right doctor. There are many factors to consider, for example, the doctor’s experience, expertise and the technology used. Visit, research, and compare surgeons before choosing the one you are most comfortable with. When you talk to your doctors about cataract surgery, prepare some questions beforehand.

How is cataract surgery typically performed?

The surgery itself takes about 15 to 30 minutes and is performed in one eye at a time. Local anaesthesia is usually used. Typically, after a short observation period, you will be allowed to go home. It will not be possible to drive a car right after surgery.

Can both eyes be treated in one procedure?

If you have cataracts in both eyes, your doctor will usually schedule the second surgery a few weeks after the first surgery. However, it becomes more and more common to treat both eyes in one procedure, at the same day.

Does cataract surgery hurt?

No, the procedure is painless. You will usually only receive drops of anesthesia to numb your eye during surgery. As your medication wears off after the procedure, you might feel some minor discomfort for a short time. This can easily be treated with over-the-counter pain medication.

How long do the effects of cataract surgery last?

Cataract surgery is permanent. The IOL does not have to be removed or replaced and can stay in the eye for the rest of the life.

Are any further examinations required after surgery?

A follow-up visit is necessary the day after surgery to check the state of your eye as well as answer any questions you might have. Additional examinations are typically scheduled over the following weeks to monitor the healing process.

How long will it take before I regain full vision?

Patients frequently notice a significant vision improvement immediately after surgery. However, some may also experience blurriness. It can take a few days for the eye to adjust and vision to improve. 

What activities should I avoid after surgery?

Following surgery, doctors may advise you to relax and avoid strenuous activities such as bending over or lifting. They may advise you not to overexert your eyes, so they have time to recover. For optimal healing, you should avoid rubbing or pressing your eye.

Intraocular lenses (IOLs)

What size are IOLs?

Intraocular lenses are pretty small, with a diameter about 13 millimetres.

What are IOLs made of?

IOLs are made of acrylate; a soft, flexible and biocompatible material.

What if I suffer from other vision changes or eye diseases in addition to cataracts?

To better match the unique requirements of each patient, modern IOLs offer added functions such as the correction of pre-existing refractive vision deficits. They can, for example, enable the patient better contrast vision (aspheric lenses).

What is spherical aberration?

A spherical aberration is a visual effect that occurs when the light rays passing into the eye are not precisely focused at one single point on the retina. Spherical aberrations are a result of the aging process. If you are already suffering from spherical aberration or if you want to prevent this visual change, an aspherical IOL may be an option for you.

How do aspheric IOLs work?

The special, not uniformly curved design of the aspheric IOLs enables them to correct spherical aberrations. With aspheric IOLs, the light rays entering the eye are once again sharply focused at a single point. The result is improved contrast sensitivity and enhanced image quality.

How do I choose the right lens?

Selecting an IOL is a very personal matter. Not only should specific medical prerequisites be taken into account, but also the individuals needs and personal preferences of the patient. Consult with your eye care specialist to help select the IOL that is best for you.

Will I need to wear glasses with IOLs?

Patients with monofocal lenses may need to continue to wear glasses for certain activities.

Related Articles

What are Cataracts? When vision becomes cloudy
Causes and Risk Factors of Cataract How to prevent cataracts
Diagnosing and Treating a Cataract Prepare for your appointment
Cataract Surgery Procedures – Step-by-step – Risks and Costs Guidelines for patients interested in cataract surgery
Choosing a Cataract Lens Introducing Intraocular Lenses: What are the differences?