During study visits, the dark-adapted a-wave amplitude, elicited by an ISCEV SF, changed by 6.72, −0.07, and 0.64 μV in the 150%, 66%, and sham groups, resp. (mean REML;
P = 0.49;
Table 1,
Fig. 1). The b-wave amplitude changed by 8.79, −8.82, and −8.43 μV in the 150%, 66%, and sham groups, resp.; the 150% group differed significantly (
P = 0.027;
Table 1,
Fig. 1). No obvious change occurred for the implicit times (
P = 0.90 and 0.96 for a- and b-wave, resp.;
Table 1,
Fig. 1). In the photopic ERG the a-wave amplitude changed 1.11, −10.35, and 2.77 μV in the 150%, 66%, and sham groups resp.; this inconsistent behavior did not reach statistical significance (
P = 0.062;
Table 1,
Fig. 2). The b-wave amplitude changed by 6.66, −0.31, and −0.21 μV in the 150%, 66%, and sham groups, resp. (
P = 0.082;
Table 1,
Fig. 2). No obvious change occurred for implicit times (
P = 0.80 and 0.25 for a- and b-wave, resp.;
Table 1;
Fig. 2). Snellen VA (in logMAR) changed 0.017, 0.039, and 0.067 in the 150%, 66%, and sham groups, resp.; the changed was not statistically significant (
P = 0.22;
Table 1,
Fig. 3). Visual field area changed by 17%, −9%, and −6% in the 150%, 66%, and sham groups, resp. (
P < 0.001;
Table 1,
Fig. 4). Mean sensitivity in the VF changed by −0.18, −0.09, and 0.66 dB in the 150%, 66%, and sham groups, resp. (
P = 0.12;
Table 1,
Fig. 4). The final threshold of rod sensitivity decreased by 0.39, 0.081, and 0.043 cd/m
2 in the 150%, 66%, and the sham groups, resp. (
P = 0.53;
Table 1,
Fig. 5). The final threshold of cone sensitivity decreased by 0.19, −0.019, and −0.084 cd/m
2 in the 150%, 66%, and the sham groups, resp. (
P = 0.46;
Table 1;
Fig. 5). The sensitivity of electrically evoked phosphenes at 20 Hz increased by 43%, 25%, and 27% in the 150%, 66%, and sham groups, resp. (
P = 0.73;
Table 1,
Fig. 6). The CCI of the Farnsworth D-15 saturated changed by 0.058, −0.04, and −0.24 in the 150%, 66%, and sham groups, resp.; values changed significantly (
P = 0.034;
Table 1). The TES of the Lanthony desaturated D-15 changed by 27.99, 2.98, and 14 in the 150%, 66%, and sham groups, resp.; values did not change significantly (
P = 0.72;
Table 1).