Long-term outcomes of intrastromal corneal ring segment implantation for post-LASIK ectasia

Yildirim, Aydın; Çakir, Hanefi; Kara, Necip; Uslu, Hatice

doi:10.1016/j.clae.2014.07.010

Cited by 13 publications

(8 citation statements)

References 11 publications

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“…9 Several studies have reported the clinical outcomes of ICRS implantation in corneas with ectasia after laser refractive surgery. [9][10][11][12][13][14][15][16][17] Most of them are focused on the analysis of visual and refractive changes as well as on the analysis of topographic and aberrometric modifications of the anterior corneal surface. Likewise, some authors have investigated potential prognostic factors of a good visual outcome after ICRS implantation in post-laser refractive surgery keratectasia.…”

Section: Characterization Of the Effect Of Intracorneal Ring Segment mentioning

confidence: 99%

Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery

Peris-Martínez

Bueno-Gimeno

Alvarez-Arana

et al. 2018

European Journal of Ophthalmology

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Purpose: To evaluate the visual, refractive, topographic, pachymetric, and biomechanical outcomes after intracorneal ring segment implantation in corneas with post-LASIK ectasia. Methods: Retrospective longitudinal study enrolling 26 eyes of 22 patients with post-LASIK ectasia and undergoing intracorneal ring segment implantation (KeraRing®, Mediphacos) using a 60-kHz femtosecond laser (IntraLase®, IntraLase Corp.) for corneal tunnelization. Visual, refractive, anterior, and posterior corneal topographic (Pentacam HR, Oculus), pachymetric, and corneal biomechanical changes (Ocular response Analyzer, Reichert) were evaluated during a 12-month follow-up. Vector analysis of astigmatic changes was performed. Results: A statistically significant reduction of sphere (p = 0.043) was observed at 1 month after surgery, with a significant improvement of uncorrected distance visual acuity associated (p = 0.019). Likewise, a significant reduction of anterior corneal power measurements (p ⩽ 0.014) and steepest posterior keratometric reading (p = 0.006) were observed at 1 month postoperatively, with no significant changes afterwards (p ⩾ 0.133). No significant changes were observed in manifest cylinder (p ⩾ 0.175), corrected distance visual acuity (p ⩾ 0.174), flattest posterior keratometric measurement (p ⩾ 0.282), volumetric measurements (p ⩾ 0.051), and corneal biomechanical parameters (p ⩾ 0.068). Vector analysis revealed an initial trend to overcorrection of astigmatism, with a trend to undercorrection at the end of follow-up and a significant variability in the outcome achieved in each patient. Conclusion: The implantation of KeraRing segments in post-LASIK corneal ectasia generates a significant modification of spherical refraction and a visual improvement due to a central corneal flattening generated. More refined nomograms of implantation in these cases should be developed to achieve a more predictable correction of astigmatism.

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Section: Characterization Of the Effect Of Intracorneal Ring Segment mentioning

confidence: 99%

Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery

Peris-Martínez

Bueno-Gimeno

Alvarez-Arana

et al. 2018

European Journal of Ophthalmology

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“…[11][12][13][20][21][22][23] Erken evre keratokonusta gözlük ya da yumuşak kontakt lens kullanmak istemeyen hastada KİHS ile iyi bir görme seviyesi sağlanabilir. Ancak orta ve ileri keratokonusta, yani sert kontakt lens (SKL) kullanması gereken hastalarda segment implantasyonu SKL'nin sağladığı görsel kaliteyi sağlayamaz.…”

Section: Endi̇kasyonlar/kontrendi̇kasyonlarunclassified

“…Günümüzde ise korneanın tüm ektatik hastalıklarında yaygın olarak kullanılmaktadır. [11][12][13] Çünkü KİHS implantasyonu doku kaybına yol açmayan, minimal invaziv, geri dönüşü olan bir cerrahidir.…”

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Intracorneal Ring Segment Applications: Review

Koç¹

2017

Turkiye Klinikleri J Ophthalmol

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“…Thus, the authors conclude that the best indications for ICRS implantation due to PLE are loss of two or more lines and PLE grade IV. 30 Yildirim et al 55 published the long-term outcomes of ICRS for PLE. Eight PLE eyes were enrolled and followed up for a period of 67 ± 21 months after femto-second laserassisted ICRS implantation procedure.…”

Section: Intrastromal Corneal Ring Segmentsmentioning

confidence: 99%

Post Laser-assisted in situ Keratomileusis Ectasia: A Systematic Review

Barbara¹,

Busool²

2017

International Journal of Keratoconus and Ectatic Corneal Diseases

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Purpose: To provide a comprehensive overview of ectasia development following laser-assisted in situ keratomileusis (LASIK). Materials and methods:Literature review of relevant studies dealing with corneal ectasia associated with refractive surgery, keratoconus (KC), and cross-linking.Results: Post Laser-assisted (PLE) involves histopathologic, clinical, and topographic characteristics similar to KC. Several risk screening indices were developed to enhance the detection of KC suspect and mild KC cases prior to the laser procedure. A grading system of PLE was developed, based on risk factors for the severity of ectasia, primarily measured by visual loss. The aims of the treatment are halting ectasia progression and restoring visual acuity. Conclusion:Familiarity with the highly sensitive and specific indices for ectasia screening, in addition to procedure parameters that increase the likelihood of ectasia development following the refractive procedure, is essential for minimizing the risk of PLE. However, when ectasia develops, early recognition and proper management are essential to prevent progression and improve visual rehabilitation.

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Long-term outcomes of intrastromal corneal ring segment implantation for post-LASIK ectasia

Cited by 13 publications

References 11 publications

Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery

Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery

Intracorneal Ring Segment Applications: Review

Post Laser-assisted in situ Keratomileusis Ectasia: A Systematic Review

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