Intracorneal ring segments (ICRS) or Intacs are a form of refractive surgery used to treat mild myopia. After a small incision is made in the cornea, two crescent-shaped plastic rings are placed in the eye on the outer edge of the cornea, sparing the central area. A laser is not part of this treatment, nor are stitches required. Once in place, the two rings flatten the cornea so that light rays can properly focus on the retina.
Intacs also may be used to treat nearsightedness and astigmatism associated with keratoconus. Keratoconus is an eye condition that results in progressive vision loss from thinning and irregularity in the cornea. This condition can be treated with glasses or contact lenses but, with progression, corneal transplantation is often necessary. Intacs now provide an alternative to corneal transplants for keratoconus patients who are unable to see clearly with glasses or contact lenses.
Primary Advantage of ICRS: May be surgically removed or replaced
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