Figure 2.

(A) Experimental protocol. Subjects first underwent a 10-minute distance viewing task under 60 lux room illumination. OCT imaging, ocular biometry, and pupil measurements were conducted before and after a 1-hour exposure condition. (B) Pupil stimulation protocol. Five minutes of dark adaptation was followed by 10 seconds of baseline pupil diameter recording. Three 1-second red and three 1-second blue stimuli were presented in alternating order, with a 60-second interstimulus interval.