Filamentary keratitis is a recurrent corneal disorder associated with multiple filaments attached to corneal epithelium causing foreign body sensation, photophobia, pain, and blurry vision.
Not always, it can occur as a separate entity or associated with systemic problems like collagen disorders.
I have seen it related to superior limbic remanent sutures after extracapsular cataract surgery or glaucoma filtration procedures, Also, in patients with deficient corneal epithelial adherence syndrome like in recurrent corneal erosion syndrome, as well as toxic medicamentosa keratitis. In none of these cases, DED existed.
Filamentary keratitis not only in dry eyes there are various other conditions also.
https://www.aimu.us/2017/08/20/filamentary-keratitis-symptoms-causes-and-mangement/
Yes Prof Farah, you are absolutely right, many conditions are associated with filamentary keratitis. I was missing you and was expecting to see you in FCPS final exam but due to my son's attempt in the examination, I had to hold on and declined.
It is accompanying "dry eye" syndrom which could be due iple causes, including also systemic disease -collagenosis, Mikulich disease, etc.
Not all the time, there are other causes like, epithelial deadherence syndrome, corneal surface irregularity at the interphase in PK, microtrauma in SLK, etc.
filamentary keratitis is not always associating dry eye but many many systemic disorders can cause both (dry eye, filamentary keratitis)
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