I am in th exact same boat as you, only my hair is light blond (parents are Scandinavian and OA means lighter shade of hair :( ). I begged for an OA forum a while ago but there was no push for it, so lucky I happened by today :).
What is your vision at currently unaided and with glasses? I'm sitting at 20/70 in one eye and 20/80 in the other uncorrected, with glasses 20/40 to 20/50 in both and with contacts 20/30 to 20/40 in both. Have you ever considered contacts? I am just like you, super self conscious about my eyes so my general tactic had always been look at someone for two seconds, ground, back for two, back to keep focus so they don't shake. Now that I'm using contacts I look at someone directly, unless I am completely tired or only using one eye, my eyes do not shake at all, anymore period.
I actually just meet an eye doctor that told me exactly why we need to wear sun glasses and it makes perfect sense to me. The worry is not that the sun is damaging your eyes instantly or lowering your vision over time, it is your skins reaction to it. What you do not want happening is the formation of moles on your retina. For us it would be pretty much game over on any chance of decent vision if we needed surgery to remove a mole on our retina :(
I will tell you one of my major tips for keeping my eyes from shaking. Your eyes get tired extremely fast in bright areas and DRY. I don't know if it is true for most people with OA, but my eye doctor said I have dry eye pretty bad. Between using contacts and always keeping eye drops in my eye the shakes are virtually gone. Try it out yourself, go out on a windy day or when its bright as your eyes get dry they will shake much worse!
I can tell you right now the worst thing for me to do is spend a day out in the boat without having eye drops or sun glasses, couple minutes in and I can barely keep my eyes open! I have been rambling but those things relate right back to daily life. If your eyes are tired (dry, no sleep) they will shake much worse. If you struggle with focusing, they will shake much worse as well.
Maybe you could answer a question for me, is there any poor mans binocular setup for driving? Even though there is a gradual shift in the country to signs bigger than 20/40, a lot of places still use 20/30 signs and smaller (for how far back you should be able to read them to make a turn decision). Maybe something not so obvious, I wouldn't want people to see me using it. I'm self-conscious.