Illuminant is helping surgeons perform safer and more efficient surgeries by projecting visual guidance directly on the patient’s skin. Using computer vision and low cost hardware, we can display patient-specific anatomical structures from preoperative medical images (e.g. CT scans), pre-operative annotations from planning, and real-time feedback, like needle depth and tool trajectory, as a surgeon operates. Our vision is to expand surgical navigation to underserved health systems and surgical specialties.