ArticleInternational journal of ophthalmology2026
Effects of different side-cut angles on ocular surface recovery after FS-LASIK.
Article in International journal of ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
aimTo compare the effects of different side-cut angles on postoperative ocular surface recovery after femtosecond laser-assisted
methodsThe prospective and randomized study enrolled 99 patients (198 eyes) with ametropia who underwent FS-LASIK in the Eye Institute at the Affiliated Hospital of Nantong University from September 2021 to December 2022. The patients were categorized into the 45°, 90°, and 135° side-cut angle groups. Preoperatively and at 10d, 1mo, and 6mo after surgery, patients in the three groups had their visual acuity, corneal flap edge scar, corneal region sensation, dry eye-related index changes, and nerve fiber repair at the corneal flap margin compared and analyzed.
resultsIn the groups with 45°, 90°, and 135° side-cut angles, 56, 58, and 62 eyes, respectively, finished the 6-month follow-up. The incidence of flap edge healing scar was the lowest in the 90° side-cut angle group (74.1%). At 10d postoperatively, corneal sensation at all sites decreased significantly compared with preoperative corneal sensation in the three groups (
conclusionDifferent side-cut angles in FS-LASIK may have different effects on the postoperative ocular surface recovery. The 90° side-cut angle has a low incidence of corneal flap scar, the highest corneal sensation in the early postoperative period, and the lowest subjective dry eye symptom scores at each postoperative follow-up time. Therefore, the selection of a 90° side-cut angle for the FS-LASIK corneal flap may help patients to recover the ocular surface after surgery.
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