Figure 1.

The pupillography provided light stimuli of varied patterns, colors, and intensities.

Patterns: Full field (F), peripheral (P), central (C), superionasal (Snq) and inferonasal (Inq) quadrant arcs.

Intensities: Bright (Br) and dim (Di).

Colors: White (W), red (R), green (G), yellow (Y) and blue (B)

Nine stimuli sequences used in this study:

1. FBrW→ FBrW→FBrW→FBrW→FBrW→FBrW→ FBrW

2. FBrW→FBrR →FBrG→FBrB→FBrY

3. FBrW→FBrR →FBrG→FBrB→FBrY

4. PDiW→ PDiR→ PDiG→ PDiB→ PDiY

5. CDiW→ CDiR→ CDiG→ CDiB→ CDiY

6. PBrW→ PBrR→ PBrG→ PBrB→ PBrY

7. CBrW→ CBrR→ CBrG→ CBrB→ CBrY

8. SnqBrW→ SnqBrR→SnqBrG→SnqBrB→SnqBrY

9. InqBrW→InqBrR→InqBrG→InqBrB→InqBrY