The number of normal corneal endothelial cells in adults: 2900±400 cells/m㎡

21 to 30 years old about 3200/m㎡

31 to 40 years old about 3000/m㎡

41 to 50 years old about 2800/m㎡

51 to 60 years old about 2600/m㎡

61～80 years old about 2400～2500 pieces/m㎡

About 2100～2400 pieces/m㎡ over 80 years old

According to the unit number of corneal endothelial cells to measure the standard of corneal age