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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Satellite lesion in a cornial ulcer with feathery margin and fixed hypopyon is a feature of:
assistant
The correct answer is  There are specific corneal features are seen in fungal corneal ulceration. In terms of corneal infiltration the classic and specific findings are feathery and elevated margins, leathery texture, dry appearance, grey-brown pigmentation, satellite lesions, fixed hypopyon (not moving with change in head position) and endothelial plaque. The most common pathogen that invades a preexisting defect is Candida which is a filamentous fungus. Aspergillus, which is a filamentous fungus, is the principal cause of post-traumatic infection. Ref: Concise Textbook of Ophthalmology By Sharma, 2006, Page 99 ; Khurana, 4th ed, Page 100