In order to stop or significantly slow down the progression of keratoconus, at MAVIT MC we offer to patients the following treatment methods:
- cross linking
- implanting intracorneal rings with a femtosecond laser
- phakic lenses
- specially adapted laser correction operations (in selected cases)
The choice of method of the treatment of keratoconus is made by the physician together with the patient following detailed diagnostic examinations.
Keratoconus treatment by implantation of intracorneal rings
In April 2015, we introduced at MAVIT Medical Centre another method of treating keratoconus – implantation of intracorneal rings with a femtosecond laser.
Keratoconus is a corneal disease occurring, according to statistics, with the incidence of 1:2,000 people. It can already begin in childhood. It involves spontaneous cornea thinning, causing progression of vision impairment, formation of irregular astigmatism, and thereby deterioration of vision.
Keratoconus occurs more often in patients with:
- habitual rubbing of the eyes.
This disease does not cause pain, its detection or confirmation occurs after a detailed examinations of corneal topography. In the early stages of keratoconus, visual acuity can be satisfactorily corrected with eye glasses or contact lenses. In advanced stages, such correction is insufficient.
Intracorneal rings were used for the first time for treatment of keratoconus in 1997 in France. The rings are made of PMMA, or polymethylmethacrylate – a material very well tolerated by the human eye (also some intraocular lenses, used in cataract surgery for several years, are made of the same material).
Implantation of the rings can inhibit or slow down the progression of keratoconus, and simultaneously, in many cases, enhance visual acuity and improve tolerance to contact lenses.
Both Cross linking and intracorneal rings allow to postpone for many years or eliminate the necessity of corneal transplant.
We implant them in patients with:
- poor visual acuity without eye glasses
- intolerance to contact lenses.
After inhibiting the progression of keratoconus you may also use other, complementary surgical methods to improve visual acuity – phakic lenses or, in some cases, special techniques of laser correction.
Implantation of the intracorneal rings
The rings are placed in the cornea in a specially prepared for them intracorneal channels. Initially, intracorneal channels were made manually with special tools called dissectors. After an introduction of the femtosecond laser to ophthalmic surgery, creation of channels has become far safer, easier and more accurate. The channels created by the laser have a precise shape, predictable width and depth. This significantly reduces the risk of possible intra-operative and post-operative complications. It also allows performing the procedure under a local topical anaesthesia.
The rings implanted into the cornea:
- change power of the intracorneal tension
- cause the increase in regularity of the cornea
- flatten too steep and steepen too flat parts of the cornea.
So that they slow down or stop the progression of the disease and in many cases improve visual acuity.
Currently, at MAVIT MC we use INTACS SK® intracorneal rings produced by the known Spanish company AJL Ophthalmic.