If there's nothing medically wrong (and you should find out first), you could try one of the eyelash growers. They may also help curl your lashes.
Note: These may be made with prostaglandin, or they may be made with a prostaglandin "analogue", or no prostaglandin. I looked up "prostaglandin analogue" and got a list with about a million chemicals. I'm probably not allowed to recommend a brand here, but I'll try code: The one I use, and it works very well, starts with L-i. I don't work for the company, invest in the company, or even know where they're HQ'd. Some brands are more irritating than others.
If you get a prostaglandin-based eyelash grower in your eyes consistently, it's possible that it will turn your irises brown. I have blue eyes & have been using it for about 9 months with no problem of that type so far.
Stop curling you lashes and see if the condition improves.
Dr. O.