A cannula can include a body with proximal and distal portions and a lumen extending through the body, the distal portion configured for insertion into a patient anatomy. An energy interface can be positioned in the proximal portion, and a light emitting device can be coupled to the energy interface and configured to emit light from the body. A system can include the cannula, a support structure, and an energy source. The support structure can include another energy interface that transfers energy to/from the energy interface. The energy source can be coupled to the cannula via the energy interfaces, where the light emitting device emits light from the body in response to energy received from the energy source via the energy interfaces. One or more cannulae can be used to illuminate the patient anatomy.