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Cornea & External Diseases

















Surgery & Complications
Intrastromal Corneal Ring Segments (ICRS)

  • Refractive surgical procedure which produce a predictable alteration of the recipient corneal curvature by inserting two segments of an intrastromal refractive device into cornea stromal channels.
  • Indication: eyes with refractive errors from -1 to -4.50 D.
  • Side effects:
    • Peripheral corneal haze, which is usually not visually significant
    • Lamellar channel deposits of collagen and proteoglycan due to the wound healing process
    • Microperforation or tear of Descemet's membrane may occur during dissection of the stromal channel
    • Irregular astigmatism has also been reported
    • Other rare complications such as persistent focal corneal edema and poor visual acuity have prompted explantation of the device

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