I had optic neuritis 2 yrs. ago, which caused a lot of pain around my left eye, "flashing lights",
a blind spot, and fluctuating vision; all of these symptoms were intermittent. An MRI showed inflammation of the optic nerve close to the eye (but not back throughout the brain).
Unfortunately, this was before I knew that I had lyme, so I was treated with high doses of steroids. Apparently, lyme loves steroids. Oh, well, who knew...?
Since that time, I have continued to have fluctuating vision in that eye. I have two different prescriptions of glasses and contacts for that eye. I started oral antibiotics in Feb. 2009 and IV abx in June 2009. I have significantly less pain, haven't had the 'blind spot' in a while, and I seem to see better most days. Before treatment, I also had trouble seeing on the computer and when reading the paper and books. Enlarging the type helped. I haven't driven at night since being on the IV, so I don't know whether my night vision has gotten better, but like you I had noticed quite a bit of trouble driving at night. (Someone told me that the computer screens are the only reading situation where we are looking directly AT light; so that makes your eyes tired more quickly). I have required a lot of light in rooms where I am reading. There is not a "book light" made that allows me to read in bed, with other lights off. This "light" requirement seems persistent. I also turn on all the lights that I can when using the computer. Typing on the computer in the dark (like I'm trying to do right now) is really hard. I need to replace a light bulb and flip on the overhead light. !!!
I have noticed that my reading comprehension has increased; whether that is specifically "eye" related, or cognitively-related, I can't really say.
I have also experienced conjunctivitis, an irritation of both ' eyeballs" particularly, prior to and immediately after starting oral antibiotics. That has reduced quite a bit since starting the IV, but not completely gone away.
Do you wear contacts? Some days my eyes are so dry/irritated that I have resorted to wearing glasses for days on end (which I HATE coz I look dorky). I have some type of eye drops for conjunctivitis, and just regular eye drops for contact lens wearers. I am more comfortable with using either eye drops regularly.
Good luck with your treatment. Yes, it IS wacky!!!! My doctor said, think of it as if you are a glass window, and lyme is a thick film over the window. Your treatment is gradually swiping off that film, but it will take time to slowly remove all of it. Good analogy for me (I'm impatient and want to be better RIGHT THIS MINUTE!) Good luck!