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Surgical implications of 3D vs 2D endoscopic ear surgery: a case-control study
Giulia Molinari1,2, Talisa Ragonesi3, Sara-Lynn Hool3
1Department of Otolaryngology Head and Neck Surgery, Inselspital, University Hospital and University of Bern, Freiburgstrasse 15, 3010, Bern, Switzerland. dr.giuliamolinari@gmail.com.
Summary
Three-dimensional (3D) endoscopic ear surgery (EES) offers improved visualization compared to standard 2D techniques, with similar surgical outcomes and safety profiles. Surgeons reported enhanced depth perception and anatomical views, favoring 3D for future procedures.
Area of Science:
- Otolaryngology
- Surgical Technology
- Medical Imaging
Background:
- Endoscopic ear surgery (EES) is a minimally invasive technique.
- Traditional 2D endoscopy presents limitations in depth perception.
- Advancements in 3D visualization technology offer potential improvements for complex surgical procedures.
Purpose of the Study:
- To compare the efficacy and safety of 3D versus 2D technology in endoscopic ear surgery (EES).
- To gather and analyze surgeons' subjective feedback on utilizing 3D endoscopy in EES.
- To outline the optimal operative setting for implementing 3D EES.
Main Methods:
- A case-control study was conducted, matching 3D EES cases with 2D EES controls.
- Data collected included surgical approach, procedure type, operative time, outcomes, and complications.
- Surgeons provided post-operative feedback via a 5-point Likert scale questionnaire on 3D endoscopy use.
Main Results:
- No 3D procedures were converted to 2D; no intraoperative or long-term complications were observed.
- Operative times and postoperative hearing outcomes were comparable between 3D and 2D groups.
- 96% of surgeons reported improved anatomical and pathological visualization with 3D, with minimal discomfort.
Conclusions:
- Both 3D and 2D systems demonstrate comparable safety and effectiveness in EES.
- Surgeons' feedback highlights 3D's superior depth perception and visualization, leading to a preference for its use in future EES.
- Optimizing the operating room setup is critical for maximizing the benefits of 3D EES.

