Hi PATT2603.
Scleritis seems to be associated with connective tissue disease,
often with underlying conditions as RA (rheumatoid arthritis) and GPA
(granulomatosis with polyangiitis).
So scleritis itself may be considered a symptom of one of the above for practical treatment purposes.
In other words by treating, let's say the underlying RA(should this be in your case for example), then the scleritis may collapse.
Inflammation is at least in part responsible, so the successful treatment will have to incorporate some anti-inflammatory component.
Boswellia serrata, known as Salai in India is a very good natural anti-inflammatory agent and an immmunomodulator, known for its regulation of vascular responses to inflammation and if taken with a meal containing enough oil/fat its efficiency rises by 700% !
Here's the better news given in layman's terms: From my study on TNF-a (Tumor Necrosis Factor-Alpha) a nasty group of chemical inflammatory agents :
TNF-a causes also connective tissue breakdown. And guess what?
Boswellia can inhibit this destructive process.
The auto-immune response may have to do with the inability of the body to
process & remove dead tissue, so as the immune system gets overwhelmed, it allows some of these dead cells to pass through unprocessed, and to react with other molecules thus triggering the autoimmune response. So Boswellia would work directly at the source of this destructive process.
Search under "PMID: 16677108", for a related study on Boswellia.
I hope this helps, however it is not intended as a substitute for medical advice.
Best wishes.
Niko