Most infections caused by M. haemophilus occur in immunocompromised populations (e.g., HIV-infected patients, organ transplant recipients, patients with autoimmune diseases, and those with IgA deficiency), patients with uncontrolled diabetes, and young children [8,9,10,11]. Immunocompetent individuals are rarely infected by M. haemophilus . However, in recent years, patients have been reported to be infected by tattoos, eyebrow tattooing, and acupuncture [12, 13], and trauma can lead to M. hemophilus infection. In addition, multiple ocular surgeries may cause ocular M. haemophilus infections [14]. The patient reported herein was a healthy adult with no medical history. All systemic examinations performed after eye infection were normal, and no infections were found in other parts of the body. The patient, a gold miner who had worked in a wet environment for a long time, may have been exposed to sewage containing M. haemophilus . Unnoticed or undetected trauma, such as the casual eye