To report a case of late corneal infection following trauma by a chestnut bur. Case : A 60year-old woman was referred to us for hypopyon. She had suffered trauma by a chestnut bur in the left eye 3 months before. The bur was removed 4 days later followed by treatment. The left eye became painful since one month before. Findings : Corrected visual acuity was 1.5 right and 1.2 left. The left cornea showed opacity at 4 o'clock position with infiltration behind and hypopyon. The corneal lesion progressed after topical and systemic treatment with multiple antibiotics and peroral voriconazole. Aqueous humor tapped 9 days later showed Malassezia restricta by PCR amplification. Cure was obtained after intravenous amphotericin B. Conclusion : Late corneal infection following trauma by a chestnut bur was due to Malassezia restricta.