Augmented reality in liver surgery reduces intraoperative bleeding and complications.

• Blood loss decreased by 75.9 ml (p < 0.001) with AR guidance.
• Transfusion rates dropped to nearly half (RR: 0.47; p = 0.01); fewer complications (RR: 0.64; p = 0.009).

AR-assisted techniques could improve surgical precision and patient outcomes, particularly in tumor cases.

• Tumor recurrence rates halved in AR-guided resections (RR: 0.52; p = 0.002).