A 80-year-old female presented with soreness in both shoulders and upper back. According to the patient, she feels tired all the time and also had near-persistent headache in last few days. The doctor manages her conservatively. 3 days later she again presented with sudden loss of vision in the left eye Ophthalmoscopic examination was done. What is next best appropriate step in the above condition: -
Brain MRI to evaluate for demyelinating disease or tumour Initiate high dose glucocoicoid therapy and refer for temporal aery biopsy Ocular massage for 2 minutes followed by repeat visual acuity testing Topical beta-blocker administration