The effect of thin lenticule versus thick lenticule (a cut-off value of 55 micrometer) on the outcome of SMILE in low myopia
AbstractObjectives: In the current study, the aim was to evaluate the effect difference in lenticule thickness SMILE cases (≤ 55 µm versus > 55 µm) on the visual outcome in a cohort of 61 patients with low myopia (≤3.0 diopters)
Methods: The current prospective cohort study included 61 patients undergoing SMILE refractive procedure during the period extending from November the 14th 2019 through June the 14th 2020, a total of 99 eyes. The study was conducted in Ibsar ophthalmology surgery centre "private medical centre" in the wholly Najaf city, mid-Euphrates region of Iraq. The cases enrolled in the study were all operated on by the same ophthalmologist. According to lenticule thickness, eyes were classified into two groups, (≤ 55 µm versus > 55 µm). The main outcome variable was visual acuity postoperative within two short period of time, one week and 3 months.
Results: Comparison of visual acuity between patients with lenticule thickness of ≤ 55 µm and patients with lenticule thickness of > 55 µm was shown in table 6. There was no significant difference in UCVA (uncorrected visual acuity) (P = 1.000), significant difference in BCVA (best corrected visual acuity) (better with lenticule thickness of ≤ 55 µm) (P = 0.037), no significant difference in VAAS (visual acuity after surgery) (P = 0.065) and no significant difference in VA3M (visual acuity 3 months after surgery) (P = 0.599).
Conclusion: Thin lenticule of less than or equal 55 micrometer to as low as 41 micrometer can be chosen for SMILE with efficacy and safety comparable to that of thicker lenticule provided that the operation is done by well trained and skilled refractive surgeon.
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