Vitrectomy is the most effective way to treat a macular hole causing vision loss. Depending on the case, the average successful hole closure rate is 90-95 percent after just one surgery. However, visual improvement after vitrectomy can vary by patient, with some patients recovering more vision after vitrectomy than others. Most patients who have vitrectomy for a macular hole find their vision is not as good as it was prior to the onset of symptoms.