the eyes. its not the worst or most handicapping thing, but perhaps the craziest.
i was diagnosed astigmatism. when picking up glasses made to prescription, they wouldnt fit anymore. i thought the guys were idiots, but in fact my eyes are just ever changing..
contact lenses felt like cutting my eye apart, the optician couldnt see anything wrong.
since early 20s i have been walking through a blurry world.
later, one eye was lasered.
anti-helminthics, antibiotics and h2o2 helped a lot, but still there are the monster floaters and other weird effects.
these medications change the colors i perceive, their intensity, and - the 3D vision. before i wouldnt have complained about any of this, as i thought its normal. but it makes a huge positive difference.
sometimes, mostly it is when waking up, vision is as if one eye is on the neck and the other on the forehead or so...
it may take hours until it normalizes somewhat.