Effectiveness of intracorneal ring segments for keratoconusPark, Se Euna; Tseng, Michaelb; Lee, Jimmy K.bCurrent Opinion in Ophthalmology: July 2019 - Volume 30 - Issue 4 - p 220–228 doi: 10.1097/ICU.0000000000000582 REFRACTIVE SURGERY: Edited by Jimmy K. Lee Buy Abstract Author InformationAuthors Article MetricsMetrics Purpose of review To review the efficacy of intrastromal corneal ring segments (ICRS) for keratoconus and with other interventions such as contacts lens, keratoplasty, and corneal collagen cross-linking. Recent findings Changes in ICRS thickness and size, combination of procedures, and the adaptation of a more sophisticated classification system have broadened our application of ICRS. Recent studies have shown the long-term efficacy of ICRS in visual acuity, keratometry, and astigmatism. Summary Studies have demonstrated the short-term and long-term efficacy of ICRS implantation in patients with keratoconus. aAlbert Einstein College of Medicine bDepartment of Ophthalmology and Visual Sciences, Montefiore Medical Center, Bronx, NY, USA Correspondence to Jimmy K. Lee, MD, Associate Professor of Ophthalmology and Visual Sciences, Albert Einstein College of Medicine, Director of Cornea and Refractive Surgery, Department of Ophthalmology and Visual Sciences, Montefiore Medical Center, 3332 Rochambeau Avenue, 3rd floor, Bronx, NY 10467, USA. Tel: +1 718 920 5263; fax: +1 718 881 5439; e-mail: email@example.com Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.