ArticleInternational ophthalmology2025
Impact of corneal curvature on 2-year postoperative visual outcomes after small incision lenticule extraction for high myopia.
Article in International ophthalmology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Effectiveness and Safety of Auricular Acupressure Combined with Periocular Thumbtack Needle Therapy for Premyopic Children: A Multicenter, Randomized, Controlled Trial.Chinese journal of integrative medicine · 2026Trial
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Authors and funding
4 authors.
Funding
Abstract
purposeHigh myopia requires precise surgical interventions to ensure optimal visual outcomes. Small Incision Lenticule Extraction (SMILE) has proven effective for high myopia correction, but the long-term impact of corneal curvature on refractive outcomes remains exploring. This study aimed to investigate whether preoperative low mean corneal curvature (Km) might result in refractive overcorrection, and to evaluate its influence on the refractive status of highly myopic patients 2 years post-SMILE surgery.
methods67 patients underwent SMILE surgery were categorized into Low Corneal Curvature (n = 31) and Normal Corneal Curvature groups (n = 36) based on preoperative corneal curvature (Km ≤ 42.0D or 42.0D < Km < 46.0D). Corneal curvature, uncorrected distance visual acuity, and surgical parameters were analyzed over a 2-year follow-up period. Changes in corneal morphology were evaluated on Scheimpfug imaging.
resultsNo significant differences were observed in uncorrected distance visual acuity (UDVA) or changes in UDVA (△UDVA) at various time points between the two groups. However, differences in spherical equivalent (SE) were identified at 1 week (0.06 ± 0.47 vs. - 0.23 ± 0.23, P = 0.019) and 1 month (0.04 ± 0.41 vs. - 0.22 ± 0.39, P = 0.007), indicating relative overcorrection in the Low Corneal Curvature group. Significant disparities in corneal curvature were consistently noted between the groups throughout the 2-year postoperative period, with the Low Corneal Curvature Group exhibiting a greater change in Km compared to the Normal Corneal Curvature Group from 1 to 2 years (0.20 ± 0.17 vs. 0.12 ± 0.17, P = 0.003).
conclusionCorneal curvature significantly influences the refractive status of patients with high myopia at 2 years following SMILE surgery.
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