Table II.

The comparison of b-wave amplitude of rat electroretinogram (mean ± SD, µV).

Group	Before modeling	After treatment
NC	183.24±16.10	178.73±19.21
DM	176.19±19.21	124.04±21.98a
LP	175.66±21.53	147.56±18.26a,b
HP	186.08±18.45	163.30±22.15c

Compared with NC group

^aP<0.01; compared with DM group

^bP<0.05

^cP<0.01.