A case of keratitis caused by microsporidia infection was reported. A 57-year-old female patient, without any obvious predisposing cause, presented with eye redness, eye abrasion and vision loss for one year in the left eye. The patient was diagnosed with viral keratitis based on laboratory examinations and clinical symptoms two months ago in our hospital. He was given outpatient treatment for antivirus. Two months later, he was admitted to our hospital with worsened condition that presented with corneal ulcer. After admission, corneal scraping examination was performed for the detection of microsporidia with calcofluor white (CFW) and Ziehl-Neelsen staining, the smear revealed multiple oval spore-like structures, with acid-fast positive and showed blue fluorescence on potassium hydroxide with CFW stain, confirming a diagnosis of microsporidial keratitis in the left eye. Treatment: topical use of ofloxacin eye ointment and voriconazole eye drops was not effective, and then penetrating keratoplasty was performed, and the patient's condition was stable after surgery. At present, they are still in treatment and follow-up.
患者女性，57岁，无诱因左眼眼红、眼磨伴视力下降病史1年。2个月前初诊为病毒性角膜炎，按病毒性角膜炎治疗2个月后病情加重，角膜出现溃疡。行角膜刮片细胞学检查，角膜刮片行荧光染色可见较多蓝色椭圆形孢子样结构，行齐-内染色可见较多红色椭圆形孢子样结构，确诊为左眼微孢子虫性角膜炎。局部给予氧氟沙星眼膏、伏立康唑滴眼液等抗炎抗感染治疗效果不佳，后行穿透性角膜移植术，术后患者病情平稳。.