Figure 9. Comparison of the microvascular density (Dbox) in the quadrantal partition of the RVN of all 32 patients. The Dbox was significantly decreased in the inferior nasal sector 1 week postoperatively (p=0.014*), and further decreased in all four quadrants 1 month postoperatively (p<0.05*). The data was expressed as mean±SD. * denotes p<0.05, ** denotes p<0.01.