Sparks in the eyes or flashes of light in front of the eyes are clinically diagnosed symptoms of temporal arteritis. Temporal arteritis, also known as cranial arteritis, is named after the anatomical site. It is an inflammatory disease of the large and medium arteries that can involve arteries in several locations, but all have temporal artery damage. It is clinically characterized by headache, fever, eye pain, generalized pain and progressive visual impairment or even blindness. The disease is closely related to rheumatic polymyalgia. Temporal arteritis caused by sparks in front of the eyes or flash in front of the eyes of the etiology: 1, temporal arteritis for extensive arteritis in and large arteries can be involved: to the carotid artery branches are common, such as the superficial temporal artery, vertebral artery, ophthalmic artery and the posterior ciliary artery, followed by the internal carotid artery and the external carotid artery; about 10% ~ 15% of the large arteries, such as the arch of the aorta, the proximal and distal aorta involved; and the lungs, kidneys, the splenic arteries are less often involved. Involved arterial lesions were segmental jump distribution, for patchy hyperplasia distal aortic involvement; while the lung, kidney and splenic arteries were less involved. Involved arterial lesions are in segmental jumps: patchy hyperplastic granulomas. Tissue sections of the inflamed area show infiltration of lymphocytes, macrophages, histiocytes and multinucleated giant cells, and whole-layer arteritis centered on the elastic basement membrane, which can lead to rupture of the vessel wall, intimal thickening, stenosis and even occlusion. Among the infiltrating cells, multinucleated giant cells are the most characteristic, and eosinophils and neutrophils are occasionally seen. Fibrin-like deposits are rare. Smoking and sun exposure can trigger or aggravate the disease.