While in keratoconus almost all degrees of the disease can be treated with CISIS, the main indication for common vision problems is patients with myopia who do not want or can not wear glasses or contact lenses and who are not suitable for laser correction.

Of those patients who visit a laser center to correct ametropia, up to 20% of patients are not eligible for laser therapy. The reasons may be many, such as Irregular corneal surface, corneal diseases such as keratoconus, too thin cornea, too high ametropia, etc. Of these patients, about half are suitable for a correction of defective vision by means of CISIS. Basically, almost every myopia can be treated with CISIS (MyoRing) - but sometimes there are limitations, especially if in very short-sighted patients the pupil width is too large. A particular advantage of CISIS is that the procedure is minimally invasive and reversible. As a result, in contrast to laser correction, it is very easy to restore the eye to its original state by removing the MyoRing. In special cases of myopia, even laser treatment and MyoRing can be combined (see case studies below). Farsightedness can not be corrected with the MyoRing.