i have run it several times now,usually at 25mg a day and never experienced any sides either.
the vision issues you refer to are a known side effect of s4 which is supposedly a stronger sarm but with that nasty side plus people saying it does shut you down to some extend.
my research was done with unique and once with gwp of which i got some strange pumps in my right side just where the liver is located,made me wonder if there was a pro-hormone mixed in.
anyway never ever had any issues with unique,have even run it at 40mg a day and haven't experienced neither shutdown or vision issues.
you get lean gains of about 2-3kg kept after a 8 week run,a nice increase in strength,overall leaner and more vascular look and some serious pumps in the gym.did i mention i love this stuff to?!