I know about his warnings. Most people do not do colonics. I think he was too much into the particulars and missed some of the larger issues.
It's true that you could possibly get worse from having some sort of toxin not release from the colon after a flush, but equally so you can reabsorb toxins from the small intestine, so his theory is totally shot right there because colonics do not address the small intestine.
And unless you time the colonic absolutely perfectly to coincide with the exact moment these toxins pass from the ileocecal valve into the colon, and assuming that you can get water all the way to the valve during a colonic, and assuming that you will not reabsorb anything even during the colonic, then Moritz's theories leave a lot to be desired.
He was sort of like Hulda Clark , he never actually invented anything new, all he did was combine basic ayurveda with Liver Flushes and magical stones and a few select herbs and oxygen colon cleaners. I really have no idea why he garnered such a cult following - but people love to follow gurus.
Worst by far of all these cases is not following through with the flushes regardless of colonics. Couple this with your eye problems and the odds are that you have more stones in the liver to deal with.
Hopefully you will feel better after a few more flushes. You have to know when to hit the gas and when to hit the brakes.