Mold can cause both redness and watering of the eyes. Using the prescribed eye drops will make your mother better. However, Mold that penetrates the eye's interior also can cause endophthalmitis, though rarely, with most cases reported in tropical regions. The treatment of mold endophthalmitis typically involves a combination of vitrectomy, intravitreal and/or intracameral (into the anterior chamber) injection of an antifungal agent, removal of foreign materials (eg, intraocular lens), and systemic antifungal therapy. Corneal transplantation is indicated in some cases. No controlled trials of treatment regimens for mold endophthalmitis have been performed given its rarity. The evidence regarding the treatment of mold endophthalmitis comes from case reports and case series. Even with therapy, there is a high rate of loss of useful vision, but the prognosis may be improving with the availability of newer antifungal agents such as voriconazole.