I was diagnosed with PMR and GCA in September 2022. I was experiencing sudden onset of vision loss in my left eye. I had a color doppler which was ruled as negative and a temporal artery biopsy which was positive for GCA. There is a high incidence of false neg even with the biopsy. My surgeon said in 12 years of performing TAB my results were his 2nd positive biopsy. Unfortunately, the vision loss in my left eye is permanent.