Protection from phototoxic injury during laparoscopic surgery in patients with erythropoietic protoporphyria

Erythropoietic protoporphyria is a hereditary defect in heme synthesis, causing protoporphyrin deposition and phototoxic reactions after exposure to light, especially at a wavelength of about 400 nm. Sensitivity to light may cause postoperative complications. Therefore, in open surgery protective filters are employed on surgical luminaires. The dangers of laparoscopy are little understood and the intensity of the light used can be high. To protect against phototoxic injury, we inserted an OG 530 filter in the video track. This filter blocks wavelengths below 470 nm. Three cholecystectomies and one sigmoidectomies were performed laparoscopically. The procedures were uneventful, and the patients suffered no adverse reactions, including phototoxic symptoms. The filter had a moderate influence on color perception and caused no significant restrictions on working conditions. We consider that it is appropriate to develop a relevant design to meet the suitable requirements for a durable filter holder in the laparoscopic video track.