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Print ISSN: 1792-0981 Online ISSN: 1792-1015
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May-2026 Volume 31 Issue 5

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Case Report

Management after two consecutive suction losses during small‑incision lenticule extraction: A case report

  • Authors:
    • Luanying Wei
    • Tiantian Qi
    • Nan Li
    • Qiang Shi
    • Shengjian Mi
    • Cheng Pei
  • View Affiliations / Copyright

    Affiliations: Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
  • Article Number: 126
    |
    Published online on: March 3, 2026
       https://doi.org/10.3892/etm.2026.13122
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Abstract

Suction loss is a small‑incision lenticule extraction (SMILE) surgery complication which may compromise postoperative visual quality. Most instances of intraoperative suction loss can be promptly remedied; however, the reports of two consecutive suction losses leading to an incomplete procedure are limited. In the present case report a 24‑year‑old man underwent SMILE at the General Hospital of Ningxia Medical University (Yinchuan, China); the surgery was successfully completed in the right eye, nevertheless, the left eye experienced two consecutive suction losses, resulting in incomplete treatment. At ~1.5 months post operation, the patient presented to The First Affiliated Hospital of Xi'an Jiaotong University (Xi'an, China) where the treating physicians were unaware of the exact details of the first procedure. At that time, the uncorrected distance visual acuity in the left eye was 20/400, and the corrected distance visual acuity was 20/16. Subsequently, the patient received femtosecond laser‑assisted in situ keratomileusis surgery for the left eye. At the 1‑month postoperative visit, the uncorrected distance visual acuity had improved to 20/13. The present case demonstrates that suction loss carries a certain probability (0.17‑5.06%) during SMILE, with two consecutive intraoperative suction losses being even more uncommon; however, with remedial measures, favorable postoperative visual outcomes can be secured.
View Figures

Figure 1

Cap thickness of the left eye after
SMILE measured by anterior segment optical coherence tomography.
‘Cap’ refers to the thin corneal tissue layer retained
post-lenticule removal in SMILE. SMILE, small-incision lenticule
extraction.

Figure 2

Intraoperative images for the first
suction losses during SMILE surgery on the left eye. All images are
presented from the perspective of the surgeon and appear upside
down (a common presentation of surgical microscopic views). (A) A
small part of the bulbar conjunctiva (white arrow; the bulbar
conjunctiva is a thin, transparent membrane covering the outer
surface of the eyeball). (B) A slight upward displacement (<0.3
mm) of the eye position (white arrow; eye position displacement
refers to the slight movement of the eyeball from its ideal
surgical position during the operation). (C) The eye position
shifted upward ~1 mm (white arrow). (D) The progressive first
suction loss occurred (suction loss refers to a condition in SMILE
surgery where the surgical suction ring loses stable adherence to
the eye, which may affect the subsequent surgical steps). SMILE,
small-incision lenticule extraction.

Figure 3

Intraoperative images for the second
suction losses during SMILE surgery on the left eye. All images are
presented from the perspective of the surgeon and appear upside
down. (A) The cutting line of the lens edge (white arrow; the
lenticule is a small, lens-shaped corneal tissue fragment removed
during SMILE surgery) and the presence of bubble dispersion plus
bulbar conjunctiva (blue arrow; bubble dispersion refers to the
scattered distribution of small air bubbles generated during the
surgical process). (B) The cap scanning was completed. (C) The cap
incision was incomplete with a misaligned manner (white arrow;
misaligned incision means the surgical incision for opening the
corneal cap does not match the preset path, resulting in incomplete
incision). SMILE, small-incision lenticule extraction.
View References

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Copy and paste a formatted citation
Spandidos Publications style
Wei L, Qi T, Li N, Shi Q, Mi S and Pei C: Management after two consecutive suction losses during small‑incision lenticule extraction: A case report. Exp Ther Med 31: 126, 2026.
APA
Wei, L., Qi, T., Li, N., Shi, Q., Mi, S., & Pei, C. (2026). Management after two consecutive suction losses during small‑incision lenticule extraction: A case report. Experimental and Therapeutic Medicine, 31, 126. https://doi.org/10.3892/etm.2026.13122
MLA
Wei, L., Qi, T., Li, N., Shi, Q., Mi, S., Pei, C."Management after two consecutive suction losses during small‑incision lenticule extraction: A case report". Experimental and Therapeutic Medicine 31.5 (2026): 126.
Chicago
Wei, L., Qi, T., Li, N., Shi, Q., Mi, S., Pei, C."Management after two consecutive suction losses during small‑incision lenticule extraction: A case report". Experimental and Therapeutic Medicine 31, no. 5 (2026): 126. https://doi.org/10.3892/etm.2026.13122
Copy and paste a formatted citation
x
Spandidos Publications style
Wei L, Qi T, Li N, Shi Q, Mi S and Pei C: Management after two consecutive suction losses during small‑incision lenticule extraction: A case report. Exp Ther Med 31: 126, 2026.
APA
Wei, L., Qi, T., Li, N., Shi, Q., Mi, S., & Pei, C. (2026). Management after two consecutive suction losses during small‑incision lenticule extraction: A case report. Experimental and Therapeutic Medicine, 31, 126. https://doi.org/10.3892/etm.2026.13122
MLA
Wei, L., Qi, T., Li, N., Shi, Q., Mi, S., Pei, C."Management after two consecutive suction losses during small‑incision lenticule extraction: A case report". Experimental and Therapeutic Medicine 31.5 (2026): 126.
Chicago
Wei, L., Qi, T., Li, N., Shi, Q., Mi, S., Pei, C."Management after two consecutive suction losses during small‑incision lenticule extraction: A case report". Experimental and Therapeutic Medicine 31, no. 5 (2026): 126. https://doi.org/10.3892/etm.2026.13122
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