After the epithelium is detached from the black eye, it will take about 2~3 days until it is completely healed before vision can be restored. The black eye is also known as cornea, the surface is covered with epithelium, when encountered with trauma and other circumstances may lead to corneal epithelium damage and detachment, at this time the patient will appear eye redness, eye pain, photophobia, tearing, loss of vision and other symptoms, you need to point to promote the repair of the cornea of the medication treatment, such as recombinant human epidermal growth factor drops, recombinant bovine basic fibroblast growth factor drops, and so on. After treatment, the corneal epithelium can be completely repaired in about 2-3 days, at which time, the above symptoms will disappear and the vision of the eyes will be restored. It is recommended that the corneal epithelial detachment should consult a doctor in time and should not be treated without authorization.