AR Glasses in Veterinary Surgery | Improving Surgical Accuracy

Research into AR-Guided Veterinary Surgery

Veterinary surgeons may soon have a new way to navigate complex head and neck procedures. A proof-of-concept study conducted at the University of California, Davis, indicates that augmented reality (AR) glasses significantly increase spatial accuracy during simulated operations. By projecting 3D diagnostic images directly onto the patient, surgeons can maintain their focus on the anatomy while viewing critical data.

Stephanie Goldschmidt, associate professor of dentistry and oral surgery at the UC Davis School of Veterinary Medicine and the study's senior author, noted the potential for this tech. The glasses allow for an overlay of 3D diagnostic imaging and biological information onto the animal. This method removes the need for surgeons to shift their gaze between a 2D monitor and the patient, a process that can lead to errors when calculating depth and spatial coordinates.

Testing Accuracy in Simulated Procedures

Researchers recruited 22 licensed veterinarians from UC Davis to participate in the study. The group included residents and faculty members from departments such as neurology, orthopedics, and dentistry. Participants worked with a holographic 3D model of a dog's head containing an oral tumor to test the system in a controlled, realistic environment.

The tasks involved two distinct objectives. In distance tasks, participants memorized specific coordinates from a screen and attempted to relocate them on the hologram. In area tasks, they traced tumor margins. The results showed a marked improvement in performance when using the AR headset compared to memory-based attempts. Specifically, distance error dropped from 3.42 mm to 2.73 mm. Participants also completed these tasks faster using the AR guidance.

For area tracing, the results were even more pronounced. Accuracy levels rose from roughly 63% when working from memory to 84% when using the live AR outline. The speed remained consistent between the two methods, suggesting that the technology does not create a bottleneck for the operating surgeon.

Future Implications and Current Hurdles

Despite the positive outcomes, the researchers identified early challenges that require further development. Participants rated the system's usability at 3.55 out of 5, indicating a generally intuitive design. However, they reported lower satisfaction with the system's responsiveness and noted that hand-tracking lag became more frequent during sessions lasting longer than 90 minutes.

Veterinarians with more than two years of experience showed lower error rates than newer practitioners. The performance was consistent regardless of the participant's surgical specialty. This data suggests that while the tool is effective, it still requires a degree of adaptation.

This study represents an initial proof-of-concept, meaning the results are based on holographic models rather than physical animal tissue. Moving into clinical practice remains the essential next hurdle for the team. If the findings hold up in live operating rooms, this technology could change how veterinary teams approach oncological surgery. Protecting healthy tissue while removing tumors remains the goal, and tools that improve precision contribute directly to better patient outcomes. The team plans to continue refining the integration of AR for surgical planning and execution in the coming months.