Correction Of High Post-Keratoplasty Astigmatism Using Curved Keratotomies With Intrastromal Sliding
Published 2025 - 43rd Congress of the ESCRS
Reference: PO555 | Type: Free paper | DOI: 10.82333/35jd-3738
Authors: Dariel Mathur* 1 , Noshir Shroff 2 , Ranjan Dutta 2
1Cornea and Refractive surgery,Shroff Eye Centre,New Delhi,India, 2Cataract and refractive surgery,Shroff Eye Centre,New Delhi,India
Purpose
This study aims to evaluate the effectiveness of curved keratotomies with intrastromal sliding in reducing refractive and total corneal astigmatism in patients who previously underwent keratoplasty (PK and DALK).
Setting
Sekal Microchirurgia Rovigo, Rovigo Italia
Methods
A retrospective cohort study was conducted on 40 eyes that underwent curved keratotomies with intrastromal sliding following PK and DALK. The collected preoperative and postoperative (12 months) data included best-corrected visual acuity (BCVA), total corneal astigmatism (TCA), and total corneal aberrometry (OPD in Deq) at 5 mm (SphAb, Coma, and RMS), assessed using AS-OCT MS-39 (CSO). Inferential statistical analysis was performed using SPSS software.
Results
Preoperative mean values and standard deviations were: Sphere: -0.82 ± 3.77 D, Refractive Cylinder: -2.42 ± 5.90 D, SEQ: -2.03 ± 4.11 D (0.3 logMAR), TCA: 7.83 ± 2.45 D, SphAb: 0.19 ± 0.22 Deq, Coma: 0.49 ± 0.40 Deq, and RMS: 1.40 ± 0.64 Deq.
Postoperative mean values and standard deviations were: Sphere: -0.62 ± 3.34 D (p < .01), Refractive Cylinder: -3.20 ± 2.88 D (p < .01), SEQ: -0.78 ± 4.06 D (0.15 logMAR) (p < .01), TCA: 3.11 ± 1.20 D (p < .01), SphAb: 0.24 ± 0.14 Deq (p > .01), Coma: 0.45 ± 0.25 Deq (p < .01), and RMS: 1.20 ± 0.61 Deq (p < .01).
Conclusions
Curved keratotomies with intrastromal sliding effectively reduce high post-keratoplasty astigmatism and demonstrate excellent corrective efficacy and long-term stability.