My mom has serious issues with exposure to mold. She has been seeing a good naturopath for quite a long time about it and my impression is that they have really helped her. There were some issues with water leakage from outdoors that weren't obvious - she had to get some rather fancy testing done before the homeowners association (her home is technically a condo but really a freestanding single home) would agree to fix it. After fixing it and undergoing naturopathic treatments - if I remember right to desensitize her - she's been much better. She didn't have dry eye symptoms but had a cough and reflux issues for years and those have practically gone away. I have known of other cases where mold caused real harm to tear glands. I believe that while we shouldn't be afraid of everything potentially harmful in the environment, we do know our bodies best, so if you feel strongly that this is connected I'd sure encourage you to check it out.
The Dry Eye Zone