Table 1.

Effect of LPS and melatonin on scotopic ERG a-wave and b-wave latency Average latency (ms)

Treatment	a-wave	b-wave
Control	24.4 ± 0.1	54.9 ± 0.5
LPS	23.8 ± 0.2	56.3 ± 0.7
LPS + Mel 12 h	24.8 ± 0.2	52.7 ± 0.3
LPS + Mel 24 h	27.0 ± 0.3	55.1 ± 0.4

Scotopic ERG a- and b-wave latency in hamster eyes injected with vehicle or LPS from animals untreated or treated with melatonin at day 8 after intravitreal injections. No significant differences in these parameters were observed among groups. Data are mean ± SEM (n = 10 eyes per group).