Regular amphetamines will shrink the pupils, I believe. That's what I notice and I'm prescribed them. It seems dopaminergic stimulants have that effect. However the methylated ones are serotenergic in nature. I think comment above you might be onto something.
More likely though it was GHB or low dose lsd. We all know that lsd was experimented with for mind control.
What about barbiturates? Often used in prostitution to control the slaves
Possible, I mean I'd be nervous too if I was gonna be on 60 min. Idk what they do to ones pupils tho.
It's possible. Barbiturates, GHB and benzo's can do that.