Can We Improve Visual Acuity After Intrastromal Corneal Ring Segments Implantation for Keratoconus and Post LASIK Ectasia

Barbara, Adel; Abbas, Sajjad; Barbara, Ramez

doi:10.1007/978-3-319-98032-4_21

Cited by 1 publication

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“…Barbara et al [15] have described the mechanism of action of the MyoRing compared to other intrastromal ring segments. MyoRing differs from other intrastromal rings for corneal ectasia and the correction of refractive error.…”

Section: Discussionmentioning

confidence: 99%

Outcomes of MyoRing Implantation in Eyes with Keratoconus in the Eastern Province of Saudi Arabia: “A Single-Arm Cohort Study”

Alshammari

Somali

2019

Journal of Ophthalmology

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Purpose. To evaluate the efficacy and safety of MyoRing implantation in eyes with keratoconus managed at a tertiary eye hospital in the Eastern Province of Saudi Arabia. Methods. This one-armed historical cohort study included keratoconus patients operated for MyoRing implant. The cases were assessed before and 6 months after surgery. Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), spherical equivalent (SE), central corneal thickness (CCT), and corneal curvature (Kmean) were noted and measured before and 6 months after the intervention. Intra- and postoperative complications were noted. Result. We studied 12 eyes of 12 patients with moderate keratoconus. The median of Kmean was 50.6 mm (IQR 47.54; 52.5) and 44.5 mm (IQR 42.5; 46.8) before and 6 months after surgery. The change in Kmean was significant (P=0.002). The median spherical equivalent (SE) was −5.1D (interquartile range (IQR) 7.1; −3.6) and −0.6 (IQR −2.1; 0.8) before and 6 months after surgery. The difference in SE was significant (Wilcoxon signed-rank test P=0.004). The CCT was 447 ± 34 μm and 444 ± 30 μm before and 6 months after surgery, respectively. The CCT change was not significant (P=0.26). The UCVA and BCVA improved by 2 or more lines in 9 (75%) eyes, remained stable in 2 (16.7%) eyes, and decreased in 2 (16.7%) eyes. Conclusion. MyoRing implant seems to be a safe and effective procedure to manage low and moderate keratoconus. The outcomes could be further enhanced by additional procedures such as collagen cross-linkage and photorefractive keratectomy if warranted.

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Section: Discussionmentioning

confidence: 99%