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Intraocular lenses
In cases of severe defective vision or contraindications in terms of corneal laser treatment lens-surgical procedures may be employed:

  • Phakic lens implantation
  • RLA (refractive lens-replacement)
  • Multifocal lens

Phakic lens implantation (Artisan, Artiflex, ICL, PRL)

Corneal surgery is limited by the existing thickness of the cornea (about 0.5 mm in the centre). In cases of severe defective vision the LASIK method alone can not compensate the defective refraction power completely. Near-sightedness of >-8.0 dpt resp. long-sightedness >+3.0 dpt are not to be treated by the means of LASIK as the cornea is too thin. There are several types of lenses that can be implanted maintaining the body's own lens.

Depending on whether they are placed in front of the iris - within the eye's anterior chamber - or behind it they are referred to as anterior- resp. posterior chamber lenses. All lenses consist of well-tolerated materials that are easy to process. The Artiflex and the Artisan lenses are special anterior chamber lenses while the ICL and PRL are posterior chamber lenses. Those are applicable in cases of long-sightedness from +10 dioptre and near-sightedness of up to -20 dioptre. Furthermore astigmatism of up to -6 dioptre can be treated.

These lenses come with outstanding optical characteristics. Beyond that those implants provide very predictable results. One of the big benefits of this method is its reversibility (i.e. if necessary the procedure can be reversed) and the cornea stays untreated. The phakic lens implantation thereby puts itself forward for young patients whose own lens still has the ability of close focusing and therefore no reading glasses are required yet (accommodation).

The surgery is conducted as outpatient treatment under local anaesthesia. The procedure takes only a few minutes. First a small incision of only 3 mm is made using a diamond knife by which the artificial lens is inserted. In contrast to LASIK treatment only one eye a day is treated. The second eye is taken care of few days after.



RLA (Refractive Lens Replacement)

This surgical technique means the direct replacement of the body's own lens with an optical implant. The procedure is basically identically equal to the cataract surgery. By the way the treatment of cataract is the most frequent surgical procedure in ophthalmology (in 2006 560.000 surgeries had been conducted solely in Germany). Beyond that this procedure is extremely standardised and safe. During refractive lens replacement (RLA) yet the still clear lens is removed and replaced by a posterior chamber lens in order to deliver the patient from his/her often very strong glasses. Refractive lens replacement is mostly employed treating patients from the age of 45 and existing severe defective vision.
Toric Intraocular Lens
By employing an artificial toric lens severe astigmatism is being equalised.

This is made possible by the new type of technology of artificial toric lenses:

  • eradicates cataract
  • corrects your astigmatism with innovative shape of the surface
  • protects the retina by integrated UV- and blue light filter
  • provides for undimmed and sharp vision at a distance without visual aids
  • well-tolerated

The implantation takes place after special measurements of the eye have been conducted in order to verify the correct position of the lens.
AcrySof® Cachet™ – seeing clearly all the time – even without glasses
The phakic AcrySof® Cachet™ is the latest form of surgical therapy for average and severe near-sightedness from -6 dpt up to -16.5 dpt. It is a clear and foldable synthetic lens that resembles a contact lens but permanently stays in the eye. Jointly with the natural lens it provides for the light to correctly focus on the retina again.

This provides you with the opportunity of gaining clear sight again - completely without glasses or contact lenses in every condition of life. If presbyopia has already set in you have to go on using reading glasses as you were used to before wearing contact lenses and reading glasses. The AcrySof® Cachet™ implantation in the long run offers a very safe correction option.



What is the course of treatment?

The treatment can be conducted under local anaesthesia. General anaesthetic is not necessary unless you request it.

First, making a small incision, the surgeon opens the cornea along the edge of the iris and injects a gel into the inside of the cornea for its protection. By the means of an injector the AcrySof® Cachet™ is placed and positioned inside the eye. Afterwards the abundant gel is aspirated and the eye is treated antibiotic drops or ointment. Shortly after surgery most of the patients are capable of seeing clearly again without glasses. The visual rehabilitation therefore proceeds significantly faster than after a laser surgical procedure. In support of the healing process your doctor may apply a bandage to your eye, give you and eye patch or a pair of glasses for a short period of time. During the first weeks the eyes may be a little more sensitive to light than usually.



Is the phakic lens suitable for me?

The AcrySof® Cachet™ is suitable
  • if your near-sightedness of the given dioptre values from -6 dpt to -16.5 dpt can be corrected entirely or for the most part.
  • for people from the ages of 21 and in case the cornea is in good condition.
  • if the prescription power of glasses resp. contact lenses has been stable over the course of at least one year.
  • if your eye meets the corresponding anatomical requirements.
  • if you are not suited for laser surgery..



This lens should not be implanted

  • in case you are suffering from chronic eye inflammation (ophthalmitis) or other eye diseases.
  • during pregnancy and breastfeeding.
  • in case your cornea does not meet medical requirements e.g. if the density of endothelial cells is lower than necessary.
  • in certain cases of existing - or post-surgically expectable - astigmatism of over 2.0 dpt cylinder. An additional laser correction procedure can be help with this. – Speak to us about this.
AcrySof® Natural - The innovative intraocular lens with blue-light-filter
Harm to the retina by blue light

Besides ultraviolet rays presumably another proportion of sun light is responsible for eye damage: the proportion of blue. Blue light is short-wave (400 to 470 nm) and therefore very energy-rich. Against this proportion of blue there is a natural shield protecting our eyes: the macular pigment (so to speak our sun glasses against blue light). Unfortunately its downside is that it disappears with the passing of the years. Still our body is able to fend for itself. Over the course of our lives - with ageing - a yellow lens pigment is developed which works as a protective filter. It narrows the proportion of the blue light and thereby reduces the risk of retinal damage.

Blue-Light-Filter

If this natural protective filter is removed during cataract surgery the eye should not be left vulnerable to the influence of the blue light without any protection. Especially young cataract-patients and patients with age-related macular degeneration (AMD symptomatology) distinctively benefit from a intraocular lens with additional blue-light-filter as e.g. the AcrySof® Natural as well as the AcrySof® IQ have it. This blue-light-filter simulates the natural lens's filtering characteristics in this way taking over the protective function for the retina.  

Lenses with blue-light-filter:

  • AcrySof® Natural
  • AcrySof® IQ
  • AcrySof® ReSTOR
Bioptics
By bioptics one understands the combined treatment concepts that are applied where a single procedure (e.g. LASIK) cannot provide full correction of the weak eyesight. This way e.g. it becomes possible - in cases of severe defective vision - to insert an intraocular lens first and subsequently correct a potential remaining defective vision by polishing using LASIK. These combinations substantially ease the burdens on the eye and enhance the corrective options exceedingly.

Bioptics procedures become reasonable e.g. if the thickness of the cornea is not sufficient to conduct LASIK. In combination with the Excimer-laser (e.g. LASIK) very severe defective vision (e.g. severe near-sightedness and astigmatism) can be straightened out (bioptics).
 
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