The Glowport - Illuminated vitrectomy trocar cannulas

Area of Science:

• Ophthalmology
• Surgical Technology
• Biomedical Engineering

Background:

• Small-gauge trocar cannulas are used in transconjunctival sutureless pars plana vitrectomy (PPV) for reduced trauma.
• Dim lighting during PPV hinders cannula visualization, complicating instrument exchange and potentially increasing surgical time and errors.

Purpose of the Study:

• To introduce a frugal, fluorescent device, the "Glowport," for improved visualization of trocar cannulas during PPV.
• To enhance the efficiency and safety of instrument exchange in the posterior segment under darkroom conditions.

Main Methods:

• 3D-printed phosphorescent rings (Glowports) were designed to fit snugly around standard trocar cannulas.
• The Glowports were fitted onto cannulas before PPV and activated by focusing endo-illuminator light for photoluminescence.
• The device was evaluated for its ability to visualize cannula entry and facilitate instrument exchange under mesopic conditions.

Main Results:

• The Glowport provides clear visualization of cannula entry points in low-light conditions.
• The device facilitates smoother and more efficient instrument exchange during vitreoretinal surgery.
• Use of the Glowport potentially reduces ocular touch errors and surgical duration.

Conclusions:

• The Glowport is a cost-effective, retrofittable device that significantly improves trocar cannula visualization during PPV.
• This innovation enhances surgical workflow and safety in vitreoretinal procedures performed under darkroom conditions.