• World Neurosurg · Jul 2019

    Breadth and depth: Three-dimensional endoscopy field of view.

    • Robert Bickerton, Shahzada Ahmed, Amr Kholief, and Abdul-Karim Nassimizadeh.
    • College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom. Electronic address: rxb451@student.bham.ac.uk.
    • World Neurosurg. 2019 Jul 1; 127: e717-e721.

    BackgroundThree-dimensional (3D) endoscopy is an emerging tool in ear-nose-throat (ENT) and skull base surgery with the benefit of providing real-time depth perception. Several investigators have reported that the field of view (FOV) is reduced in 3D endoscopes compared with regular 2-dimensional (2D) endoscopes. Thus, we objectively compared the FOV of 2D and 3D endoscopes.MethodsUsing a standard 2D and 2 different 3D ENT endoscopes, images were captured of 1-mm graph paper from a set distance of 6 cm. The FOV was calculated from these images and compared among the endoscopes.ResultsThe VisionSense 3D endoscope had a slightly smaller FOV (9.1 cm vs. 10.1 cm; -9.9%), and the Karl Storz 3D endoscope showed a slightly larger FOV (10.4 cm vs. 10.1 cm; +3.0%). However, the results were complicated by the different-shaped images produced by the 3D endoscopes.ConclusionThe differences in the FOV between the 2D and 3D endoscopes used in ENT surgery were not clinically significant. Thus, the FOV should not be considered a limitation of 3D technology.Copyright © 2019 Elsevier Inc. All rights reserved.

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