Corneal edema grading, corneal thickness, intraocular pressure, endothelial cell density, and anterior chamber angle in the different groups 4 months postoperatively. (A) Grading of corneal edema. The corneal edema score was significantly lower in the nanoparticle-magnet group (1±0) than in the control group (3.5±0.6) and the model group (3.8±0.5) (**P<0.01). (B) Corneal thickness. The corneal thickness in the nanoparticle-magnet group was significantly less than in the control group and the model group (**P<0.01) and similar to the normal group (P=0.049). (C) Intraocular pressure. Compared with the intraocular pressure of the normal group, there was no significant difference in the other three groups (P>0.05). (D) Endothelial cell density. The endothelial cell density in the nanoparticle-magnet group was lower than the normal group (*P<0.05). (E) Anterior chamber angle measured by OCT. OCT revealed an open anterior chamber angle and that no UCB EPCs clogged the angle in the nanoparticle-magnet group. (F) Normal anterior chamber of rabbit.