This does happen to me, I think. My vision also become blurred, and I am aware of what's going on around me, but can't really like react, I can hear people talking, walking just as if I were awake.
But I'm not sure if what it is with me is actually like microsleep. The oddest part is that no one ever notices. I've gone almost entire meeting and stuff and no one notices.
Is it possible to microsleep with your eyes open or something? After one of those 'episodes', I come out feeling like I had a good nap, except my eyelids hurt, and I have a slight headache.
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"Of all God's creatures, there is only one that cannot be made slave of the leash. That one is the cat. If man could be crossed with the cat it would improve the man, but it would deteriorate the cat." - Mark Twain