you know, i have noticed this too, though it's probably nothing, been on finasteride for over 6 year, my lashes are fine though, just that you can pull them out easier...but i still have plenty... i don't think it is anything
i know when i started losing, you get compulsive about pulling hair out and counting, probably the same with eyelashes... i never did this before hairloss, so nothing to base it on. plus as i said, i have plenty of eyelashes