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Rhino-orbital mucormycosis has seen a huge resurgence in patients post COVID-19 infection. In patients with minimal orbital disease and especially with preserved vision, retrobulbar injections of amphotericin B can be of great help in controlling the disease. Instead of giving daily injections of amphotericin B using needles every time, we used an 18-gauge intravenous (IV) cannula with injection port and suture holes to deliver the amphotericin into the orbital space for a period of 5 days. Patients were more compliant and less distressed with this method compared with being given an injection with a needle daily. We got a good response in terms of orbital disease regression with this method. In our review of the literature, we did not come across any such case of amphotericin B injection using an IV cannula. Injection of amphotericin B into the orbit using an IV cannula is a viable and easy treatment option for cases of rhino-orbital mucormycosis.