Hello, this is my first post to this site. I wanted to share my experience, because after two years of blepharitis symptoms and four different eye doctors who, while clearly sympathetic, were not able to help, my blepharitis symptoms finally resolved over a period of roughly three months through a combination of a low cholesterol diet and a 12 day course of prednisone (for a lower back injury...thank goodness I hurt my back! Never would have known...).
Please note that I am not sure precisely which of these two components, the change in diet or the predisone, helped the most in resolving my blepharitis (likely synergistic); I only know that upon changing my diet to a significantly lower cholesterol diet, my blepharitis began to gradually improve, and that after taking a 12 day prednisone pack (for an unrelated lower back injury), that the blepharitis left for good almost immediately (although barely sleeping for 2 weeks wasn't fun...) and hasn't been back (I finished that predinsone pack about 4 months ago, so I've been entirely blepharitis free for the past 4 months...after 2 years of wondering what caused it and whether or not I'd ever get rid of it, it feels so good
Please note also that not one eye doctor recommended this strategy (including three from Duke Eye Center), despite my repeated inquiries into the potential mechanisms involved in blepharitis, etc. (I am not a medical doctor, but I hold a PhD in biomedical engineering with significant post-doctoral experience in tissue engineering (including nearly three years as an assistant prof...so I have a solid understanding of how to approach biomedical problems systematically).
By the time that I changed my diet (a New Year's resolution that I started Jan. 1st, 2014) I had seen four different eye doctors for my symptoms (please note that I do not wear contacts or glasses and never saw an eye doctor before my blepharitis symptoms began). Their suggestions progressively escalated from the standard "first line of defense"--baby shampoo (give me a break...)--to antibiotic, and then steroid, eye drops, and finally to a choice between sticking a heated cup of sorts beneath my eyelid to melt the congealed waxes comprising my chalazion to some laser therapy... In any event, I'm glad I changed my diet (because I knew I had high cholesterol (approaching 300 total) for quite some time). In turns out that there are (a few) studies in which a connection between high cholesterol and blepharitis have been established: please see, for example, the following review article:
http://www.ncbi.nlm.nih.gov/pubmed/2071340
Interestingly, the high cholesterol component has been linked not only to blockage of the meibomian glands, but also to promoting the growth of bacteria such as Staph aureus; thus, the high cholesterol hypothesis appears to be consistent with both the physical blockage mechanism, the bacterial component, as well as the inflammatory component associated with the two. That's where I believe the predisone did it's work, by breaking the cycle of inflammation, which I'd already began to chip away at through reducing my cholesterol intake.
So, there you go, my suggestion is to find a doctor sufficiently open-minded to prescribe a 12-day course of prednisone (be careful with this stuff, it causes insomnia and potential for mood fluctuations--read everything about it before taking it). Also, my suggestion is to begin the whole process by reducing your cholesterol intake. I am so hopeful that this information may be helpful to you, because I feel so fortunate that I seem to have finally figured it out for myself and I hope it works for you, too.
If you have any more specific questions, please feel free to ask and I'll do my best to answer (again, please note that I'm not a medical doctor, simply sharing my personal experience).
Take care and best wishes,
George