Light pen

Light pens were a piece of medical equipment that could be used to shine a targeted light at a patient. They consisted of a silver rod with the light source at one end and a square head marked by blue lights at the other. The pen made a beeping noise when turned on. In 5 BBY, Doctor Rhasiv, a medical technician at an Imperial Prison Complex on the moon Narkina 5, carried a light pen as part of his medical kit. He used the pen while examining the prisoner Ulaf, shining it in Ulaf's eyes to try and get a reaction; however, as Ulaf had suffered a massive stroke, there was no reaction, and Rhasiv ultimately euthanized the patient.

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