Intrastromal Corneal Ring Segment SK for Moderate to Severe Keratoconus: A Case Series

Fahd, Daoud; Jabbur, Nada S.; Awwad, Shady T.

doi:10.3928/1081597x-20120921-05

Cited by 25 publications

(26 citation statements)

References 11 publications

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“…15 Several prospective and retrospective case series indicated similar pattern of improvement in visual acuity, keratometric readings and spherical, cylindrical refractions. [16][17][18][19][20][21] In general, the findings of the current study are consistent with those findings where a statistically significant improvement is detected when comparing between preoperative and postoperative variables. However, the study by Gharaibeh et al reported that statistically significant improvement is likely to occur during the first three months postoperatively where the improvement is sustainable but not incremental when comparing six-month postoperative findings to those at the three-month postoperative interval.…”

Section: Discussionsupporting

confidence: 91%

Safety and effectiveness of intrastromal corneal ring segment implantation at Al-Dharan Eye Specialist Hospital, Al-Dharan, Saudi Arabia

Alaqsam¹,

Aljindan

Almahmod³

et al. 2019

Int Surg J

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Background: Intrastromal corneal ring segment (ICRS) implantation is one of the treatment options of keratoconus. This study is aiming to evaluate safety and effectivness of ICRS implantation at Al-Dharan Eye Specialist Hospital.Methods: This study is a descriptive retrospective case series study. The target population of this study is patients diagnosed with corneal ectasia who underwent ICRS implantation in Al-Dharan Eye Specialist Hospital, Al-Dharan, Saudi Arabia. Preoperative and postoperative data about uncorrected visual acuity (UCVA), best spectacle–corrected visual acuity (BSCVA), manifest refraction, keratometry, applanation tonometry, corneal topography, and slit-lamp biomicroscopy and indirect ophthalmoscopy were retrieved from medical records of department of Medical Archive. Paired students t-test was used to compare preoperative and postoperative means of study variables.Results: The total number of recruited patients in this study was 57 patients where 62% of them were males. Sixty-six treated eyes were included in this study where no intra-operative complications were recorded. Upon comparing the mean preoperative data to the mean postoperative data at three months, six months and one year intervals, an overall improvement in the measured outcomes was witnessed. UCVA, BSCVA, and keratometric readings exhibited a statistically significant improvement when comparing preoperative with one-year postoperative findings (p<0.001).Conclusions: The findings of this study indicate that ICRS implantation is a safe and effective treatment for keratoconus.

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Section: Discussionsupporting

confidence: 91%

Safety and effectiveness of intrastromal corneal ring segment implantation at Al-Dharan Eye Specialist Hospital, Al-Dharan, Saudi Arabia

Alaqsam¹,

Aljindan

Almahmod³

et al. 2019

Int Surg J

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“…(10)(11)(12)(13)(14) . Although previous studies have evaluated ICRS efficacy in patients who were intolerant to rigid contact lenses (and therefore potential candidates for a corneal transplant) (15)(16)(17) , to the best of our knowledge, there are no published data regarding Keraring ICRS efficacy in patients with keratoconus who were already scheduled for penetrating keratoplasty. Consequently, we performed a small case series study to determine whether Keraring ICRS implantation might represent a surgical alternative to corneal grafting in patients with keratoconus who were awaiting penetrating keratoplasty.…”

Section: Introductionmentioning

confidence: 76%

Intrastromal corneal ring segments delay corneal grafting in patients with keratoconus

Beniz¹,

Queiroz²,

Queiroz³

et al. 2016

Arquivos Brasileiros De Oftalmologia

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Approved by the following research ethics committee: Hospital das Clínicas, Universidade Federal de Goiás (219.191). ABSTRACT Purpose:To assess the impact of intrastromal corneal ring segments (ICRS) as a surgical alternative to corneal grafting in patients with keratoconus who were scheduled for a corneal transplant. Methods: This single-surgeon, single-center, retrospective, observational case series study included 19 eyes of 18 patients (mean age, 23.36 ± 6.22 years) with a confirmed diagnosis of keratoconus. These patients were enrolled from the State of Goiás, Brazil corneal graft waiting list. Following extensive pre-operative testing, including the measurement of best-corrected visual acuity (BCVA), applanation tonometry, biomicroscopy, funduscopy, pachymetry, and corneal topography, patients were implanted with Keraring® ICRS. Patients underwent clinical examination at postoperative days 1, 7, 30, 90, and 180 and were examined again 2 years following surgery. Results: At the 2-year cut-off following ICRS implantation (mean follow-up, 28.72 ± 4.71 months), there was a statistically significant improvement in BCVA (logMAR) from 0.59 ± 0.35 preoperatively to 0.35 ± 0.45 postoperatively (p<0.01). Three of 19 eyes (15.8%) still required keratoplasty. In the remaining patients (84.2%), BCVA was managed with spectacles (52.6%) or contact lenses (31.6%). One patient developed infectious keratitis, requiring removal of ICR at the first postoperative visit. Conclusion: ICRS implantation may be a surgical alternative to keratoplasty in patients with keratoconus. This procedure may delay or even eliminate the need for keratoplasty in such patients.

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“…Intacs SK implantation of 0.35, 0.4 and 0.45 mm segments are safe and effective for moderate to severe keratoconus eyes. 1 8 13 14 15 Haddad et al . 1 and Fahd et al .…”

Section: Discussionmentioning

confidence: 99%

Comparison of visual, refractive and topographic keratometry outcomes of intacs and intacs SK in mild to moderate keratoconus eyes

Muammar

2015

Middle East Afr J Ophthalmol

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Purpose:The purpose was to evaluate and compare the visual and refractive outcomes, topographic keratometry (K) and complications of Intacs and Intacs SK for mild to moderate keratoconus.Methods:In this retrospective study, all mild to moderate keratoconus eyes that underwent implantation of Intacs (Intacs group) or Intacs SK (Intacs SK group) with minimum follow-up of 12 months were included. Preoperative and postoperative uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction, manifest cylinder, spherical equivalent (SE), minimum topographic keratometry, maximum topographic keratometry, and average topographic keratometry were compared in both groups.Results:There were 16 eyes in the Intacs group and 18 eyes in the Intacs SK group. Preoperatively, both groups were comparable for most parameters except gender and minimum K and average K. At 6 months postoperatively there were statistically significant improvements in UDVA, CDVA, manifest sphere, SE, minimum K, maximum K, and average K (P < 0.05, all comparisons). Manifest cylinder improved at 6 months, but the improvement was not statistically significant (P > 0.05). The outcomes remained stable with no statistically significant differences between the 6 and 12 months visits. There were no complications in both groups.Conclusion:Both models of Intacs significantly improved vision and refractive outcomes, and topographic keratometry in cases of mild to moderate keratoconus. Intacs SK provided better (not statistically significant) results.

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Intrastromal Corneal Ring Segment SK for Moderate to Severe Keratoconus: A Case Series

Abstract: Implantation of Intacs SK for moderate to severe keratoconus is safe and effective, leading to significant decrease in myopia and appreciable decrease in astigmatism with improvement in CDVA.

Cited by 25 publications

References 11 publications

Safety and effectiveness of intrastromal corneal ring segment implantation at Al-Dharan Eye Specialist Hospital, Al-Dharan, Saudi Arabia

Safety and effectiveness of intrastromal corneal ring segment implantation at Al-Dharan Eye Specialist Hospital, Al-Dharan, Saudi Arabia

Intrastromal corneal ring segments delay corneal grafting in patients with keratoconus

Comparison of visual, refractive and topographic keratometry outcomes of intacs and intacs SK in mild to moderate keratoconus eyes

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