Yes loulou, some of the trials are for non eye treatments, and when treatening the vitreous yes, they are always to dissolve them. The researchers start from the basis than if the PVD is something natural in the body, and the only seen problems are their uncontrolled detachment that can cause several problems to retina, macula, etc... the safest is to accelerate the process... I think I have read that the onbut I also have the doubts if this could give more problems in the future.

As they told, if in your 50's lots and lots of persons are going to have PVD... and in the 80's perhaps the 50% are going to have it liquefied... why have vitreous? The only I have read about (and now I can't find) was an italian article about the existence of oxygen in the "hole" of the vitreous after a vitrectomy and their "oxidative effect" in retina, etc... but I don't remember nothing more or if the results were good or bad. When I was child, I get my tonsils out... the doctors told that they did not have any function... after the years they learn that tonsils are the first line of battle for the body defenses...

The good should be to finds something that attack the exact composition of the floaters... I have not found any research that tried that... I think I have read, that the composition of the floaters is the same than in other vitrous parts, so attacking the floaters you could degrade other parts of the vitreous... but well, some years ago, the enzymatic vitrectomy sounded impossible, and you see now...

The question is that exist some research, they are probing enzymes in the vitreous... and perhaps, like other advances of the science, looking for a PVD somebody will make the wrong composition of the wrong enzyme and the wrong person will notice that without PVD the floaters of that eye dissapeared... ;-)

But if it gets that it's completely safe to lose the vitreous, the enzymatic vitrectomy have good signs to be the complete end of floaters.