Protective Effect of Total Panax Notoginseng Saponins on Retinal Ganglion Cells of an Optic Nerve Crush Injury Rat Model

Figure 2

The schematic diagram of the sampling position for RGC quantification in the retina. The retinal neuroepithelium layers were cut into a cross and spread on the glass slide. Taking the optic papilla as the center, retina areas have been divided into 1/6, 3/6, and 5/6.