Table I.

Orally administration of Salvia miltiorrhiza extract protects RGCs (counts per mm², mean ± SEM).

Eye	Control group	Glaucoma group	Treatment group
Left	1,740±140	780±280a	1,396±220b,c
Right	1,794±153	1,760±214	1,810±195

^aP<0.01 and

^bP<0.05 vs. control group;

^cP<0.01, vs. glaucoma group.

RGCs, retinal ganglion cells; SEM, standard error of the mean.