Abstract
Purpose :
Chandelier lighting systems help to provide a uniform wide-angle endoillumination and allow for bimanual vitreoretinal surgery. A number of chandelier systems have been created over the years. Our study demonstrated a new technique of looped fashion fixation for fixating a canula-based chandelier system to offer increased mobility during bimanual surgery with enhanced stability of the chandelier lighting system.
Methods :
Three different fixation arrangements for a canula-based Chandelier lighting system were assessed using a model eye. These included (1) short linear fixation at 4cm, (2) long linear fixation at 8cm and (3) a looped fashion fixation at 8cm. The primary outcome assessed was average total mobility measured at total vertical and horizontal distance attainable when moving the Chandelier system up to the point of initial chandelier disinsertion from the trocar. Methods were repeated a total of 5 times for all combinations. ANOVA post-hoc statistical analysis was used for results.
Results :
The looped fashion fixation method offered the greatest chandelier stability. A maximum horizontal mobiity of 21.5cm (compared to 3.2cm for the short fixation and 8.3cm for the long fixation group) and a maximum vertical mobility of 10cm (compared to 1.8cm for short fixation and 3.4cm for long fixation group) were obtained using our described technique. The P value for both horizontal and vertical measurements between groups was <0.0001, showing statistical significance for increased mobility among the looped fashion group.
Conclusions :
The looped fashion design fixated at 8cm provided the most vertical and horizontal mobility while using a canula-based Chandelier lighting system. This described technique offers greater stability to surgeons and may help to decrease events of chandelier dislocation during surgery.
This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.