Long-Term Outcome of Femtosecond Laser-Assisted Keratopigmentation: Using Intacs Channels for Precise Pigment Deposition Within the Cornea

Cornea. 2021 Oct 1;40(10):1330-1335. doi: 10.1097/ICO.0000000000002667.

Abstract

Purpose: To describe a long-term outcome of a new technique using the femtosecond laser to assist with keratopigmentation (corneal tattooing).

Method: Nineteen eyes of 18 patients with a history of significant visual disability related to iris defects underwent femtosecond laser-assisted keratopigmentation (FAK) for functional restoration of their visual disabilities. Postoperative visual acuity and symptomatic resolution were collected during their postoperative visits.

Results: After FAK surgery, all patients had improvement in their previous visual-related symptoms. Eighteen of 19 eyes (94%) had improvement in their best-corrected Snellen visual acuity. Eight of 19 eyes (42%) had at least 1 line improvement, 8 of 19 eyes (42%) had at least 2 lines of improvement, and 2 of 19 eyes (10%) had at least 3 lines improvement. The average follow-up period was approximately 60 months.

Conclusions: The FAK technique offers a long-term effective and safe technique for visual disabilities and improves visual acuity in patients with various traumatic iris defects.

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Corneal Stroma / metabolism*
  • Corneal Stroma / physiopathology
  • Female
  • Follow-Up Studies
  • Humans
  • Iris Diseases / complications*
  • Iris Diseases / physiopathology
  • Laser Therapy / methods*
  • Male
  • Middle Aged
  • Pigmentation / physiology*
  • Refraction, Ocular
  • Retrospective Studies
  • Tattooing / methods*
  • Treatment Outcome
  • Vision Disorders / physiopathology
  • Visual Acuity / physiology