+49 201 298 100
+49 201 298 100
Refractive Lens Exchange

The refractive lens exchange offers a precise correction of high levels of defective vision. Even patients with high far-sightedness may dream of a life without glasses. Today there is a grand variety of lens models. Depending on the examinational results, the structure of the eye and the patient´s wishes the ophthalmologist chooses the best possible lens implant.

Who is suitable for a refractive lens exchange?

A life without glasses despite a high defective vision

Refractive lens exchange: Surgery technique

Refractive lens exchange, also called RLE, offers the possibility to treat higher levels of short- and far-sightedness.

Refractive lens exchange with multifocal lenses means that the endogenous often aged and stiffened lens is replaced by a new artificial lens. This is based on the surgical technique that is used with cataract surgery which is a routine surgery applied in Germany alone approximately 700.000 times a year. Contrary to the cataract surgery it is not a disease in the proper sense.

A small incision at the edge of the cornea allows the access to the lens. The core of the natural lens is shredded by ultrasonic waves and suctioned. This process is called Phakoemulsification. After that an artificial lens which previously has been calculated according to the grade of defective vision is introduced. The artificial lens is folded so that the incision needed for the introduction can be microscopic. The lens unfolds itself in the capsular sack and positions itself accordingly.

With refractive lens exchange the eye loses its natural capacity to accommodate itself to different distances (accommodation). Thus this treatment is applied only when the patient´s accommodation capability is already reduced that is, normally only after 40 years of age. Another reason is for example a beginning cataract.

Refractive Lens exchange: the surgery step by step

Essentially, the refractive lens exchange is based on the surgery technique that is used with cataract. It is a gentle routine surgery with a low complication rate which normally is executed on out-patients and under local anaesthesia.

During refractive lens exchange the endogenous stiffened eye lens is removed and replaced by a new artificial lens.

Preliminary examinations

Prior to surgery, several specialised examinations are required, for one to find out the right gradation for your new artificial lens and secondly to check your health and that of your eyes.


During lens surgery an anaesthetist is at your side who if you wish, can administer sedation. You experience the surgery in a drowsy sleep-like form. For this purpose you should be sober. Do not eat 6 hours and drink 2 hours before surgery. You need an accompanying person.

Prior to surgery

The eye is anaesthetized with special eye drops which makes the eye insensitive to pain. During the entire surgery patients are awake and responsive.

During surgery

During surgery the upper and lower lid are kept open with a small spring (surgical lid- barrier). You do not have to keep your eye open by yourself. To prevent the eye from drying, a wetting agent is applied in regular basis on to the eye surface.

After local anaesthesia the physician makes a small incision, shorter than 2mm. This incision opens a small aperture that allows access to the inside of the eye. Through this aperture the natural lens is liquefied by ultrasound and suctioned. The lens capsule remains intact. It surrounds and protects the eye lens and, at the next step, serves as “carrier” for the new artificial lens.

Prior to implantation, the new artificial lens is folded by the surgeon. Due to this the aperture through which the lens is inserted into the eye, can be microscopic.

The artificial lens unfolds itself in the lens capsule and slides into its final position. Flexible bars keep it in the capsule sack. The new lens is in the same place where the old one used to be.

The procedure is so gentle that the microscopic incision does not have to be sutured. It closes by itself - similar to a valve – without scars. Normally the surgery is over in less than 10 minutes. Generally speaking, the whole stay in the Smile Eyes Clinic is less than 2 hours.

After surgery

The eye which has undergone surgery is covered with an ointment bandage. After a certain monitoring phase we let you go home. You are not allowed to drive a vehicle so please bring an accompanying person.

At home

On the day of surgery take it easy. Best is to lie down at home. The first day after surgery the ointment bandage is removed and the eye examined. Your doctor gives you medication which you are supposed to take according to his instructions.

On the whole, during the first days after surgery you will notice a considerable improvement of your visual faculty. But initially for a short time the vision is compromised by the irritation of the eye. You have to show a little patience until reaching your final good visual acuity.

That´s what you should pay attention to in the following days and weeks

Please take the prescribed medication regularly and punctually and respect the appointments for examination.

Do not squeeze or rub your eye in any event. Even with a small self-closing incision, your eye has not yet regained its normal robustness.

In the first days after surgery your face should not be sprinkled with water. If you wash your hair, be careful to incline your head backwards. During the first days you should avoid getting your eye in contact with soap.

After three days you can undergo physical effort and play sports. Sports such as swimming or diving, or sauna should be avoided until your surgeon gives his permission, normally at the latest after two weeks.

Generally you can go back to work after 2 to 4 days.

Guiding a vehicle needs the permission of your surgeon.

Lens exchange with multifocal lenses

Multifocal lenses are highly developed intelligent artificial lenses used more and more with refractive lens exchange. They divide the light into several focuses thus enabling to see clearly in to different distances without reading glasses or varifocals.

Apart from astigmatism, artificial lenses can be used to correct short-sightedness, far-sightedness and corneal curvature. The patient thus needs no glasses at all, neither reading glasses nor varifocals.

After the implantation of the artificial lens the refraction power of the eye does not change anymore the patient does not need glasses for lifetime.

Read more:

Multifocal lenses

Lens exchange: risks

The refractive lens exchange surgery with multifocal lenses is based on the surgical technique that is applied at routine surgery of cataract.

Nevertheless even with this surgery– as with all other surgical interventions – there is a remaining risk of complications. As with any surgery there is the possibility of an infection which can be reduced to a minimum by the application of the relevant antibiotic eye drops. Rarely after surgery clouding of the lens capsule can manifest itself (the so-called opacification) but with a simple laser treatment can mostly be eliminated.

To exclude all possible risks, extensive pre- and after examinations as well as extensive patient attendance are implicit in the Smile Eyes Clinics.

The Smile Eyes plus in safety

  • Extensive preliminary examination and consultation
  • Highly qualified surgeons with year-long experience
  • Out-patient surgery with local anaesthesia and sedation without „ a syringe in the eye“
  • Presence of an anaesthetist for monitoring the cardiovascular system
  • Modern artificial lenses in foldable material
  • Modern surgery units with up-to-date certified hygienic standards
  • Quality management according to ISO 9001
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