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Endophthalmitis with retained intraocular foreign body after catgut embedding at periocular acupoints

Acupoint catgut embedding therapy is a stimulation method that was developed from traditional acupuncture therapy. It is based on the key principle of acupuncture in traditional Chinese medicine. Especially, it is based on the belief that organ disorders are reflected at specific points on or near the surface of the skin (acupoints). It is also believed that the stimulation of acupoints can modify the physiology of the body. Acupoint catgut embedding therapy employs sutures made of catgut, collagen, or polymer to apply persistent stimulation during suture absorption. This method has been applied extensively in patients with epigastric pain, obesity, low back pain, and leg pain, among others. There are reports of the application of catgut embedding at periocular acupoints for the treatment of myopia. Periocular acupoint catgut embedding is performed by placing 1–2 cm of catgut at the tip of a lumbar puncture needle tube, which is then connected to the needle core after disinfection. The acupuncture penetrates the periocular acupoints to a certain depth, which is usually located in the adipose body of the orbit. The needle core is pushed while the needle tube is withdrawn, and the catgut is embedded in the periocular acupoint. This report describes a unique case of a patient with endophthalmitis with a retained intraocular foreign body (IOFB) after an erroneous periocular acupoint catgut embedding.