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.
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