40yrs, I had a dot in my eye also when mercury poisoned. I had not used ALA. I think it was just so much being stirred up by whatever I was using and lots of crying and salivating (from detoxing). that things got shifted in all directions.

This dot appeared and there it was, everywhere I looked (being on my eye). It was there for ages too. Used to annoy me and was far worse in a light plain room. It stood out sometimes so much I was distracted by it.

It finally went away! Not sure how long I had to wait, but I guess through more detoxing and healing later on, finally cleared away the debri or healed that area up.