Intrastromal corneal ring segments (INTACS) is a non-laser procedure that involves implanting two tiny plastic arcs in the cornea. These crescents are placed in the outer edge of the cornea and opposite each other. When placed, INTACS stretch the cornea to make it flatter.

Since the procedure is used to flatten a steep cornea, nearsighted patients benefit the most. The level of nearsightedness should be mild, and the patients should have little or no astigmatism. The advantage of this procedure is that the ring segments can be removed or exchanged. INTACS are also used as a treatment for keratoconus patients.

Pros & Cons of Choosing INTACS


  • For patients with progressive keratoconus, Intacs may defer a corneal transplant
  • Reversible
  • Patients may achieve a better fit and hence a more comfortable fit with their contact lenses


  • Postoperative discomfort/pain for one to four days
  • Fluctuating vision for weeks to months after the procedure
  • Vision may not improve or change

Amy Lin, MD

Patient Rating:


4.7 out of 5

Amy Lin, MD, specializes in the medical and surgical treatment of corneal and anterior segment diseases at the Moran Eye Center, University of Utah, Salt Lake City, and at the Moran Eye Center at the Midvalley Health Center. Her interests include corneal transplantation, anterior segment reconstruction, cataract surgery (including advanced technolo... Read More

Mark D. Mifflin, MD

Patient Rating:


4.8 out of 5

Mark D. Mifflin is a board-certified, fellowship trained cornea, cataract, and refractive surgeon with over 20 years of clinical experience.  His specialties include complex cataract surgery, all forms of corneal transplantion, reconstructive surgery of the anterior segment of the eye, and LASIK, PRK, and intraocular lens vision correction.  Dr. Mi... Read More

Brian E. Zaugg, MD

Patient Rating:


4.7 out of 5

Brian Zaugg, MD, specializes in the medical and surgical treatment of corneal and anterior segment eye diseases, including expertise in all types of cornea transplantation, routine and complex cataract surgery (including multifocal lenses and laser assisted surgery), anterior segment reconstruction, pterygium removal, refractive surgery including L... Read More

John A. Moran Eye Center 65 Mario Capecchi Drive
Salt Lake City, UT 84132
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