I have a daughter born with congential ptosis. I am chemist and I was exposured a lot of chemical(solvent) when I was pregent. Is anyone have the experience like me

I think your call for similarly affected moms and babies is very appropriate. There is not much in the literature to make a clear association for this sort of exposure/condition. Of course, most workers like yourself are not exposed to a single agent, but many of them, which often makes a specific assignment of an assoication, even if it really is causal, very difficult to make. A medline search of reproductive toxicology and ptosis yields NO hits. Nor do searches on the etiology of ptosis uncover any smoking pistols (or beakers).

Good luck.