I have been diagnosed with skitzoeffective, and my eyes dialate like that when I’m nearing the the end of the month approaching my shot, or If I stop getting meds. Honestly from my perspective I’ll notice my eyes look like that and I actually think its kind of cool. Its deffinitely a sign of mania or psychosis, but in my particular case I’m usually at a state of hyper clarity and awareness, and find myself not being depressed like usual, and invested into my hobbies and playing my guitar and writing music. Then I get my shot and crash and get suicidal and my pupils get smaller than normal. Usually in my case people often annoy the crap out of me telling me how unstable I am and that I’m wacked out of my mind, but most of it is often placebo because you look different to them, so I’ll try to explain that I’m calm and not having any delusions and tbh, most of the people around me seem like they are the ones acting stupid or crazy about it and overreacting. Some people have full blown delusions and dont have any grip on reality, but for me I usually just reach a state of hyperawareness or even enlightenment. You cant really explain how your thoughts work to someone who doesnt have those experiences, they will never be able to comprehend it, not even psychiatrists. That’s why so many people fight being controlled and medicated, because in some cases the effects of mania are highly desired, especially in people who spend there lives disabled from antipsychotics.