Castor oil and dry eye??

Now that the weather is cooling down and the humidity is gone I'm really struggling with my dry eye issues. I plan on buying a humidifer to get thru this winter. I'm waking 2-3 times a nite to put drops in and my eyes are starting to burn throughout the day.

I have read about using castor oil drops at nite but not sure this is safe. I'm just wondering if anyone has tried it or has any info I can get to and do more research. Thanks so much!