Purpose To study long-term results of MyoRing treatment of keratoconus. Methods Retrospective study of MyoRing implantation into a corneal pocket for keratoconus. Results Corneal thickness at the thinnest point remained unchanged, SIM K 's, manifest sphere and cylinder were significantly improved at the first follow-up 9 months postoperatively and remained stable until the last follow-up about 5 years after surgery. Uncorrected and corrected distance visual acuity (UDVA, CDVA) were significantly improved at the first follow-up 9 months postoperatively and were further ameliorated until the last follow-up about 5 years after surgery. Conclusion The treatment was safe and effective with continuing improvement of visual acuity during the 5 years after surgery.
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