Author: Mehmet Cem Sabaner (Turkey)
Co-authors: Furkan Fatih Gulyesil, Mustafa Dogan
Purpose
To analyze 3D YouTube videos as an additional educational resource about vitreoretinal surgery, and compare them with 2Ds.
Setting/Venue
Samsun Bafra State Hospital, Department of Ophthalmology, Turkey
Methods
Using a YouTube search using the keyword "vitreoretinal surgery", “retinal surgery” and “vitrectomy”, 2D and side-by-side 3D surgery videos in the search results were included in this retrospective, cross-sectional and register-based study. The video length, time since upload, number of views, number of likes, number of dislikes, type of surgery and visualization system were recorded. Video popularity and interaction was calculated using the video power index (VPI) and interaction index (II). Videos were watched and evaluated by two ophthalmologists. 3D videos were watched on 4K TV, using the side-by-side 3D option on, with polarized 3D glasses. 2D videos were also watched on same screen with a bare eye. A modified usefulness score system was devised as "1=useless", “2=slightly useful”, “3=useful”, “4=very useful” and "5=definitely useful" to categorize for evaluate video quality and content. Interrater reliability was assessed using Kappa's coefficient.
Results
We screened 258 videos, of which fifty in 2D, fifty in 3D were found eligible for this study. Median VPI was 100 (range, 92.30-100) in 2D, and 100 (range, 66.66-100) in 3D videos (p=0.781). Median II was 0.71 (range, 0.21-4.88) in 2D, and 0.0 (range, 0.0-12.50) in 3D videos (p<0.001). The modified usefulness score was 3.27 ± 0.42 in the 2D video group, and 3.49 ± 0.55 in the 3D video group (p=0.209). A strong agreement of interrater reliability was confirmed using Kappa's coefficient (κ value=0.84).
Conlusions
While YouTube videos involving vitreoretinal surgery are certainly not a method of learning surgery from beginner level, they can be used as a resource to reinforce learned surgery, see new techniques, and remember old ones. In the present study, 2D and 3D vitreoretinal surgery videos were found similarly “useful” by specialists. Since 3D video viewing requires special equipment such as an imaging system and polarized glasses, 2D videos may have been watched/liked more and the interaction index level determined higher. Further studies are needed in this relatively new technological field on the 3D learning effects, especially in ophthalmology residency.
Financial Disclosure
Financial Disclosure: No
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