My mom has MPA, but in the beginning, she had a gritty feeling in her right eye.
Her eye felt like she had something in it when the ulcer formed.
This all happened within a month, so don't let it go.
She eventually, had to use prednisone for her eye and was diagnosed with Peripheral Ulcerative Keratitis (PUK).
The pred worked until she had the rituxan which made it flare thru the roof and her opthamalogist gave her cyclosporine (Restatis) with pred drops.
They use a blue split light to see autoimmune issues going on in the eye, so it is best to see an opthamologist before damage is done.