High-speed Beveled Tip Versus Standard Tip Vitrectomy Probe: A Prospective Randomized Clinical Trial

Area of Science:

• Ophthalmology
• Surgical Technology
• Medical Devices

Background:

• Vitrectomy surgery is a common procedure for various retinal conditions.
• Vitrector probes are essential instruments in vitrectomy, with varying cut rates and designs.
• Optimizing probe efficiency can potentially reduce surgical time and improve patient outcomes.

Purpose of the Study:

• To compare the surgical efficiency of an advanced ultravit beveled vitrector probe (10,000 cpm) against the standard ultravit highspeed vitrector probe (7,500 cpm).
• To evaluate if a higher cut rate in vitrector probes translates to improved efficiency in vitrectomy procedures.

Main Methods:

• A prospective, randomized controlled trial was conducted involving patients undergoing vitrectomy for epiretinal membrane, macular hole, or vitreous opacities.
• Participants were randomized to receive vitrectomy using either the standard ultravit highspeed probe (Probe 1) or the advanced ultravit beveled probe (Probe 2).
• The primary outcome measured was the time required for core vitrectomy and vitreous base shaving.

Main Results:

• Forty patients were included, with 20 in each group.
• The mean time for core vitrectomy completion was 10.4 ± 1.8 minutes for Probe 1 and 9.7 ± 2 minutes for Probe 2 (P = 0.21).
• The mean time for vitreous base shave completion was 9.6 ± 2.7 minutes for Probe 1 and 9.4 ± 1.8 minutes for Probe 2 (P = 0.39).

Conclusions:

• The advanced ultravit beveled probe demonstrated noninferiority to the ultravit highspeed probe in terms of surgical time for core vitrectomy and vitreous base shave.
• The higher cut rate of the advanced probe did not significantly enhance the efficiency of vitreous removal during vitrectomy.
• Current vitrector probe technology offers comparable efficiency regardless of minor variations in cut rate.