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Grading for suction loss in small incision lenticule extraction.

Qing Huang1, Lina Liu2, Pingqi Ma1

  • 1Department of Ophthalmology, Army Medical University of People's Liberation Army, Chongqing, China.

International Ophthalmology
|August 31, 2022
PubMed
Summary

Progressive suction loss is common in small-incision lenticule extraction (SMILE). Grading this suction loss helps understand its causes and guides interventions to improve SMILE safety and effectiveness.

Keywords:
FemtosecondGradingMechanismSMILESuction loss

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Area of Science:

  • Ophthalmology
  • Surgical Technology
  • Refractive Surgery

Background:

  • Suction loss during small-incision lenticule extraction (SMILE) can impact procedure outcomes.
  • Understanding suction ring stability is crucial for preventing complications.

Purpose of the Study:

  • To characterize suction loss in SMILE procedures.
  • To analyze factors influencing suction ring stability.
  • To classify and grade suction loss for targeted prevention and control.

Main Methods:

  • Retrospective analysis of surgical records and videos from SMILE procedures (June 2014-June 2017).
  • Classification and grading of suction loss based on characteristics and eye/head movement.
  • Observation of intervention effects on suction loss.

Main Results:

  • Progressive suction loss occurred in 11% of cases, while sudden loss was rare (0.17%).
  • The superior part was most affected by progressive suction loss (63.4%).
  • Grades 1 and 2 progressive suction loss were effectively managed with intraoperative interventions.

Conclusions:

  • Progressive suction loss is the predominant type during SMILE.
  • A standardized grading system aids in understanding suction loss mechanisms.
  • Targeted interventions based on classification can mitigate suction loss-induced damage, enhancing SMILE safety and efficacy.