Video-Grading Outcomes
REGRESSION
The various categories of tissue handling and surgical manipulation did not show significant differences between the 3 post hoc groups. In other words, intraoperative factors of detached grafts and detached grafts requiring rebubbling on average did not differ from uneventful postoperative courses (Table Overview Video Analysis AssessmentNone of the P-values were significant after correction for multiple comparison using the Bonferroni method.Kruskal–Wallis test between attached grafts, detached grafts not requiring rebubbling, and detached grafts requiring rebubbling.Two missing values.Three missing values.Grade I: graft lamella primarily oriented correctly in the anterior chamber, straight and direct unfolding and centering; grade II: slightly complicated, indirect unfolding and centering (duration less than 5 min); grade III: difficult indirect unfolding and centering (duration longer than 5 min), repeated air injection with BSS exchange necessary; and grade IV: direct manipulation of the graft lamella for unfolding and centering by a cannula or a pair of forceps.One missing value.Decentered was defined as the graft overlapping with recipient Descemet membrane.One-way ANOVA between attached grafts, detached grafts not requiring rebubbling, and detached grafts requiring rebubbling.To investigate independent effects and identify potential patterns that predict treatment outcomes, we conceptualized a multinomial regression model including surgical risk factors and confounding factors. No statistically significant predictors were identified in the analysis, although again the same 2 clinically relevant trends were identified: gas-bubble size at the end of surgery and graft shape after insertion (Fig. OR and 95% confidence interval of video-graded intraoperative factors on the incidence of a GD and rebubbling compared with cases with a fully attached graft. Per parameter, the reference category is noted between paracenteses. The analysis was adjusted for donor age and center.