I posted on this thread earlier today but the post has vanished

. How odd! Try again . . .
There's some thought that androgen deficiency is implicated in dry eye syndrome. Both Norethisterone in Evorel Conti & Levonorgestrel in FemSeven are testosterone derived progestogens, but it may be that the androgenic effects you were getting from Evorel Conti were more pronounced than those you are getting from FemSeven.
If you're interested in looking further into the androgen deficiency issue as possible cause, maybe put dry eye into the search box as I think I've posted links on this before. If I haven't, I can look them up & send you them if you want to PM me.