Black eye fungus an infection that is seen increasing in India , is seen as a post COVID complication. According to the experts , it is a very rare kind of disease but this time in India the number of patients of the infection are increasing with a speed. One can do self analysis on the basis of the following symptoms, that will help you to know if you are suffering from the infection or not. The symptoms are one-sided facial swelling, headache, fever, and nasal or sinus congestion.