CISIS / MyoRing Treatment


The MyoRing and the related treatment system CISIS (Corneal IntraStromal Improvement System) are an important milestone in the technological development of vision correction in patients with keratoconus and myopia.

Keratokonus: CISIS  / MyoRing is the most advanced, most effective and safest method currently available for the treatment of keratoconus. Since CISIS does not only improve the visual acuity but also strengthen the cornea and therefore stop the progression of the disease. For the first time it is possible to speak of something like a "healing" of keratoconus. 

Myopia: CISIS / MyoRing can treat medium- to high-grade myopia (shortsightedness) safely even in cases not eligible for Laser Vision Correction (LVC). This is because LVC removes tissue and weakens the cornea while the MyoRing reversibly adds volume and strengthens the cornea.

Safe and effective: This form of therapy (CISIS) is highly proven as it has already been applied in thousands of successful treatments with follow-up periods of currently more than nine years.

CISIS/MyoRing: as permanent as laser treatment and as safe as contact lenses.

The MyoRing is not placed as a "bended disk" on top of the cornea like a normal contact lens, but is a continuous ring with particular features for being inserted 0.3 mm below the corneal surface into the cornea. The result is a stabilization of the tissue and a change of the "wrong" corneal shape into the "right" one. It remains inside the cornea, but can be easily withdrawn at any time to restore the previous condition of the eye. The MyoRing permanently corrects the patient's vision, yet is as safe and reversible as an ordinary contact lens.

The MyoRing can be considered as a kind of "permanent contact lens" which is worn inside the cornea.

Inserting, exchanging and removing the MyoRing is almost as simple for the doctor as inserting, exchanging and removing of an ordinary contact lens - it takes just about 1 minute.

CISIS is indicated for

  • the treatment of all stages of keratoconus
  • myopic vision correction of up to -25 dioptres
  • post-LASIK keratectasis
  • corneal transplantation with an unsatisfactory outcome