Hydropic degeneration

Long story short, in e last two years at my work, we had 6 out of 11 pregnancies end in miscarriage.  All of us that lost babies were under 30, and in good health, so these statistics are a bit concerning.  We work In an opthalmolgy practice, that does lens cutting.  One material smells reAlly bad, and gives me a migraine every time, and we are all a bit concerned.  I am the latest loss, and they only one who had testing.   The only thing they could find out was there was hydropic degeneration,  I can't find much out about this, but that it is more a symptom, not a cause.  Anyone know where I can find information on this, or have experience.  All my google searching is bringing me to dead ends.  

I have discussed this a little with my ob, he does say the amount of losses we have is very concerning.  He also said that he wouldn't rule out an environmental issue being the cause of death, but that he has never found research saying that an optical lab causing high number of losses.

thanks in advance.