Comparison of Ngenuity and Traditional Microscope in Vitreoretinal Surgeries from Surgeon’s Perspective

Abstract Purpose: To compare Ngenuity with traditional microscope in vitreoretinal surgeries from surgeon’s perspective Methods: In this retrospective study, we recruited patients who have underwent vitreoretinal (VR) surgeries from 1st August 2017 to 30th August 2017. Patient’s clinical parameters were extracted from electronic medical records (EMR), and also video recordings of the surgeries using the Ngenuity 3D visualization system were analysed. The surgeons were asked to compare Ngenuity 3D visualization system and traditional microscope during each step of the surgery. We administered a questionnaire to compare the two modalities in each step during the surgery in terms of the preferred system, comfort, ergonomic and visual parameters. Results: Out of 31 eyes, primary rhegmatogenous retinal detachment (RRD) was 35% (11 eyes), complex recurrent RRD was 13% (4 eyes) and diabetic TRD was 16% (3 eyes). The educational value, upper body comfort and image resolution was found to be better with Ngenuity than microscope. The depth of perception, field of view and the lower body comfort was graded as similar and time lag was experienced more with Ngenuity. On comparison of the preference of traditional microscope and Ngenuity during surgical steps, preference for Ngenuity was significantly more for posterior segment steps like the truncation of cone (p= <0.00001), PVD induction (p= 0.0001), Endo laser (p=0.0001), Fluid gas exchange (p= 0.0005) and tamponade injection (p=<0.00001). Conclusions: Ngenuity provided improved neck and upper body comfort, greater field of view and was more preferred for posterior segment procedures than anterior segment during VR surgeries.