Kevin, the wierd eye sensation can possibly be the kava acting. When I am drinking kava it's usually a copius amount of fresh kava (my general preference), unless it's extract, where just a few blobs under the tongue do the job to take things down a notch. Personally find the two things somewhat unrelated where kava is concerned and rarely take too much extract (unless watching a spy thriller, sitting on the edge of the seat, with my finger in the pot of honey kava like pooh. lol~).
So, when kava enters my body I always wish for two things. People were quieter around me, and light was dimmer. My eyes do that kava thing (pardon the lack of clinical reference here, someone is welcome to chime in) and all my ears want to listen to is sweet music, like Hawaiian Music (like Hui Ohana, Kuana Torres Kahele, Gabby Pahinui and many more). Industrial music for example, would drive me up the wall at that juncture, although I have been known to enjoy that on occasion as well. And I also try and drink a cool glass of water to make things right. (this rarely happens, but I try)
Range of kava use can be anything from two days straight, day and night at a recent kava festival where I was lucky enough to be gifted a few pounds of 25 year old fresh root. Smooth and amazing.
Or just a blob or two of extract to wind down a work day. It all depends on the mood and company.
Think it's great that you are finding support right here on the forum for what ails you. Kudos to the members who offered a brother's hand.