How many of you have found the source of your dry eyes

Hey guys, so as most of us know this condition is the most miserable thing how many of you have found the source of your dry eyes such as medication, autoimmune or health issues?

I'm trying to get to the bottom of this. About four months ago I had an extensive panel of blood work, but I have never had the Sjogren's panel. Everything was perfect in terms of inflammatory markers, rheumatoid factors, and all of that. I will pursue a little more testing, but I wanted to ask you if you have found your cause ?