PURPOSE: To investigate the clinical efficacy of intracameral amphotericin injection and to evaluate risk factors affecting primary treatment success in fungal infection invading the anterior segment of the eye. METHODS: Twenty-six eyes of 26 patients diagnosed with fungal infection in the anterior segment were studied. The initial treatment regimen was a topical 0.15% amphotericin application and itraconazole oral administration after culture. Amphotericin (5 ug/0.1 ml, 0.1 cc) was repeatedly injected intracamerally when the infection intensified. Penetrating keratoplasty was conducted for eyes unresponsive to intracameral amphotericin injection. The relative risk ratios of ulcer size, infiltration depth, culture positivity, and hypopyon were compared in each treatment group to evaluate the treatment response. RESULTS: Of patients with fungal infection, 30.7% were cured with intracameral amphotericin injection, while 30.7% needed penetrating keratoplasty. Intracameral amphotericin injection was needed in the presence of large corneal ulcers (>14 mm2), hypopyon, positive fungal culture, use of steroid eye drops, and deep infiltration at initial examination. Large ulcer size (>14 mm2) was the main risk factor for needing penetrating keratoplasty. Of the eyes Candida infection, 66.5% needed evisceration. CONCLUSIONS: Large ulcer size and the isolation of Candida were poor prognostic factors related to the efficacy of intracameral amphotericin injection.