Pupillometry in depressed patients

Pupillometry in Chinese Female Patients with Depression: A Pilot Study

“…Interestingly, one study did not find a significant difference in pupillary light reflex between depressed patients and normal controls [9]. In addition, another study demonstrated that the maximum velocity and the maximum acceleration of re-dilation of the pupils were decreased in depressed patients [21], supporting the monoamine hypothesis of depression and suggesting that norepinephrine is the major neurotransmitter related to the re-dilation of the pupil.…”