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Information Journal Paper

Title

The Effect of Age on Corneal Topographic Indices, Keratometry and Visual Acuity After Combined Intrastromal Corneal Ring Segment (ICRS) Implantation and Corneal Crosslinking

Pages

  135-142

Abstract

 We aimed to assess age-related changes in corneal topographic indices, keratometry and visual acuity after sequential Intracorneal Ring Segment implantation (ICRS) and Crosslinking (CXL). This was a retrospective matched case-control series including 26 eyes of patients ≤ 18 years as cases and 26 eyes of adult patients as controls. All eyes received ICRS+CXL for progressive Keratoconus. Eyes were matched regarding the Keratoconus parameters and the treatment (type, number and thickness of ICRS). Data was analyzed for refractive and topographic values [uncorrected and corrected distance visual acuity (UDVA; CDVA) sphere; cylinder; spherical equivalent; maximum keratometry (Kmax); flat keratometry (Kflat); steep keratometry (Ksteep); all 7 pentacam topographic indices] preoperatively and one year postoperatively. Preoperatively, there was no significant difference for any refractive, clinical or topographic parameters between the groups except for index of vertical asymmetry. After one year, children had a significantly higher improvement in Ksteep (3. 05D) than adults (2. 10D; P=0. 036) and a trend to significance for Kflat (2. 7D compared to 1. 78D, respectively; P=0. 081). UDVA improved by 4. 3 ETDRS lines in children compared to 3. 3 ETDRS lines in adults and CDVA improved by 1. 7 ETDRS lines in children compared to 1. 2 ETDRS lines in adults, but with no statistical significance. The effects on keratometry indicated that corneal response after ICRS and CXL for Keratoconus is more pronounced in young patients than adults. This assumption is also supported by functional improvement and by the fact that a few eyes (5) of some very young patients (<13years) showed highly remarkable improvements after surgery (higher than any adult eye)...

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    Cite

    APA: Copy

    El Khoury, Sylvain, Abdelmassih, Youssef, Amro, Mazen, Dirani, Ali, Cherfan, Carol, & Jarade, Elias. (2020). The Effect of Age on Corneal Topographic Indices, Keratometry and Visual Acuity After Combined Intrastromal Corneal Ring Segment (ICRS) Implantation and Corneal Crosslinking. MEDICAL HYPOTHESIS, DISCOVERY AND INNOVATION OPHTHALMOLOGY, 9(2), 135-142. SID. https://sid.ir/paper/781530/en

    Vancouver: Copy

    El Khoury Sylvain, Abdelmassih Youssef, Amro Mazen, Dirani Ali, Cherfan Carol, Jarade Elias. The Effect of Age on Corneal Topographic Indices, Keratometry and Visual Acuity After Combined Intrastromal Corneal Ring Segment (ICRS) Implantation and Corneal Crosslinking. MEDICAL HYPOTHESIS, DISCOVERY AND INNOVATION OPHTHALMOLOGY[Internet]. 2020;9(2):135-142. Available from: https://sid.ir/paper/781530/en

    IEEE: Copy

    Sylvain El Khoury, Youssef Abdelmassih, Mazen Amro, Ali Dirani, Carol Cherfan, and Elias Jarade, “The Effect of Age on Corneal Topographic Indices, Keratometry and Visual Acuity After Combined Intrastromal Corneal Ring Segment (ICRS) Implantation and Corneal Crosslinking,” MEDICAL HYPOTHESIS, DISCOVERY AND INNOVATION OPHTHALMOLOGY, vol. 9, no. 2, pp. 135–142, 2020, [Online]. Available: https://sid.ir/paper/781530/en

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