Intrastromal Corneal Ring Segments Implantation in Patients With Keratoconus: 10-Year Follow-Up

Torquetti, Leonardo; Ferrara, Guilherme; Almeida, Franklin de; Cunha, L. A. P.; Araújo, Luana P. N.; Machado, Aydano Pamponet; Lyra, João Marcelo; Merayo‐Lloves, Jesús; Ferrara, Paulo

doi:10.3928/1081597x-20131217-02

Cited by 81 publications

(67 citation statements)

References 16 publications

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“…The average visual improvement of 12 lines and more in UDVA and 3 lines in CDVA correlates with earlier reports which consider one-year follow-ups after treatment 3 . This data is in striking contrast to the data obtained from ring segments, which hardly reach comparable improvements in visual acuity 6, 7, 8…”

Section: Discussionsupporting

confidence: 85%

Long-term results of MyoRing treatment of keratoconus

Daxer

Ettl

Hörantner

2017

Journal of Optometry

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PurposeTo study long-term results of MyoRing treatment of keratoconus.MethodsRetrospective study of MyoRing implantation into a corneal pocket for keratoconus.ResultsCorneal 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.ConclusionThe treatment was safe and effective with continuing improvement of visual acuity during the 5 years after surgery.

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Section: Discussionsupporting

confidence: 85%

Long-term results of MyoRing treatment of keratoconus

Daxer

Ettl

Hörantner

2017

Journal of Optometry

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“…The mean preoperative LogMAR BCVA was significantly improved from 0.57±0.29 to 0.23±0.18 at 1 year postoperatively ( P =0.001). Torquetti et al19 evaluated 10 years follow-up of intracorneal ring segments (Ferrara ring) in KC patients. They observed an improvement in both UCVA and BCVA in KC patients with a decrease in corneal thickness.…”

Section: Discussionmentioning

confidence: 99%

Refractive and visual outcomes after Keraring intrastromal corneal ring segment implantation for keratoconus assisted by femtosecond laser at 6 months follow-up

Heikal

Abdelshafy

Soliman

et al. 2016

OPTH

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PurposeWe attempted to evaluate the efficacy of femtosecond laser-assisted intrastromal corneal ring segment implantation in patients with keratoconus (KC).Patients and methodsA retrospective interventional consecutive clinical study was conducted on patients with KC who were treated with femtosecond laser Keraring implantation. All procedures were performed at Ebsar Eye Center in the period from January 5, 2015, to February 28, 2016.ResultsThirty eyes of 20 patients were included in this study. The mean age of patients was 27.43±3.57 years. Eleven patients (55%) were female and nine patients (45%) were male. Keraring segments were successfully implanted in all eyes. There were no complications or need for ring repositioning. The follow-up period was 6 months postoperatively. There was a significant improvement in the mean logarithm of the minimum angle of resolution (LogMAR) of uncorrected visual acuity (UCVA) after Keraring segment implantation from 1.5±0.23 preoperatively to 0.54±0.16 at 6 months postoperatively (P=0.001). The preoperative mean LogMAR of best-corrected visual acuity (BCVA) was 0.85±0.17. At 1 month postoperatively, it was 0.35±0.15; at 3 months postoperatively, it was 0.26±0.11, and at 6 months postoperatively, it was 0.14±0.07 (P=0.001). The mean preoperative maximum keratometric value for 3 mm pupil in diopters (K max) significantly decreased from 55.85±5.44 preoperatively (N=30) to 44.05±1.64 D at 6 months postoperatively (P=0.001). There was a statistically significant reduction in the mean preoperative spherical equivalent from −5.43±1.76 D preoperatively to −2.43±0.95 D at 6 months postoperatively. No statistically significant differences were detected between 1 and 3 months of follow-up regarding the visual and refractive outcomes.ConclusionAnalysis of the outcomes after Keraring ICRS implantation showed a significant postoperative corneal flattening with a subsequent increase in UCVA and BCVA. Using the femtosecond laser for tunnel creation made the procedure easy and fast with an accurate precise depth of implantation and reduced the risk of operative and postoperative complications.

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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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Intrastromal Corneal Ring Segments Implantation in Patients With Keratoconus: 10-Year Follow-Up

Abstract: Intrastromal corneal ring segments can effectively improve UDVA and CDVA 10 years after implantation in patients with keratoconus.

Cited by 81 publications

References 16 publications

Long-term results of MyoRing treatment of keratoconus

Long-term results of MyoRing treatment of keratoconus

Refractive and visual outcomes after Keraring intrastromal corneal ring segment implantation for keratoconus assisted by femtosecond laser at 6 months follow-up

Intracorneal Ring Segment Applications: Review

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