Objective: To observe the efficacy and safety of posterior sclera reinforcement over time.
Methods: This retrospective single-arm cohort study included children with high myopia who underwent the modified Snyder-Thompson type posterior sclera reinforcement surgery from 03/2015 to 08/2018 at Fuzhou Children's Hospital of Fujian Medical University. Axial length (AL), corneal radius of curvature (CRC), AL/CRC, refractive error, and best-corrected visual acuity (BCVA) were observed from 1 year before the operation to 2 years after.
Results: Nineteen children (33 eyes) with high myopia were included. The patients were 4.9 ± 2.7 (range, 2-10) years of age (three patients were 10 years old, all others were ≤ 7 years old). AL increased from 1 year before surgery to 2 years after surgery (from 25.31 ± 1.59 to 26.76 ± 1.52, P < 0.001). The refractive error was smaller 1 year before surgery than at the other timepoints (all P < 0.05). BCVA improved over time (P < 0.001). Changes over time were also observed in horizontal CRC (hCRC), AL/hCRC, AL/vertical CRC (vCRC), and AL/CRC (all P < 0.001), but not in vCRC (P = 0.304). The increase of AL at 2 years after surgery was smaller than at 1 year before surgery and 1 year after surgery (both P < 0.001). The increase of AL/CRC at 2 years after surgery was smaller than at 1 year before surgery (0.04 ± 0.04 vs. 0.07 ± 0.04; P = 0.008).
Conclusion: In the short term, posterior scleral reinforcement surgery can delay the increase of AL of progressive high myopia.
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