The ICAM-1 gene K469E polymorphism is associated with diabetic retinopathy in Chinese patients with Type 2 diabetes. Patients with the K469K genotype were more likely to have diabetic retinopathy than patients with the K469E or E469E genotype.

A case of cytomegalovirus (CMV)-associated bilateral retrobulbar optic neuritis (ON) following haploidentical hematopoietic stem cell transplantation (haplo-HSCT) is reported. Abrupt onset of bilateral decreased vision occurred in a 33-year-old man 7 months after haplo-HSCT. His cerebrospinal fluid (CSF) demonstrated pleocytosis with an absence of leukemic cells. CMV DNA was detected in his blood and CSF sample. Neither encephalopathy nor retinopathy was found in this patient. He was diagnosed with bilateral retrobulbar ON. Although he was given enough antiviral treatment against CMV and immunosuppression with high-dose methylprednisolone, the patient's vision showed no improvement, and he has almost total bilateral blindness. This is the first report, to our knowledge, of CMV-associated bilateral retrobulbar ON in allogeneic stem cell transplantation.