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INTRACORNEAL RING


Patients who cannot use contact lenses or for whom contact lenses are considered unsuitable may benefit from the intrastromal corneal ring insert procedure, provided that keratoconus is not at an advanced stage. Under local anesthesia, intracorneal rings (INTACS, Keraring, Ferrara) are inserted into the cornea through channels opened within seconds using Femtosecond Laser.

Intracorneal Rings Specifications:

  • Transparent,
  • Micro-dimensional,
  • In varying thickness depending on the diopter to be corrected,
  • Implanted in the corneal tissue of the eye,
  • In crescent form and composed of 2 parts.

These rings are not noticed from outside and most importantly, their presence is not felt, like contact lenses. The rings can be removed easily at any time and leave no permanent scar which may affect vision since they are not placed in the visual center. Rings with different thicknesses are implanted according to the stage of keratoconus.

When Intacs rings are inserted into the corneal tissue, they flatten the cornea and eliminate the coning of the cornea which is caused by keratoconus. Myopia is also corrected with this procedure.

The ring implanted in the eye is clear and made of a material which is compatible with ocular tissue, without causing any problems in its lifetime, and can also be removed when required. It cannot be seen from the outside after the surgery and its presence in the eye cannot be felt either.

What Types of Rings Are Available? 

Currently, two types of rings are used worldwide:

INTACS (Addition Technology): These are hexagonal rings with a diameter of 7 mm.

KERARING / FERRARA RING (Mediphacos/AJO Company): These rings are in the shape of a triangular prism and have a diameter of 5 mm.

At Dünyagöz Hospitals, corneal ring treatment is used to improve quality of vision in keratoconus. While no publication has yet reported that ring implantation stops disease progression, one-year follow up of the patients who have received a ring implantation at Dünyagöz as of today showed that nearly 88% of the patients had no progression. Therefore, patient follow-up after surgery is essential. If any progression is seen, CCL treatment can be performed after the ring operation.

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