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Strongly modulated blood flow pulse in central and branch arteries can result from hypertension. Microangiography by laser Doppler imaging [3] may reveal altered hemodynamics non-invasively. Mild signs of hypertensive retinopathy can be seen quite frequently in normal people (3–14% of adult individuals aged ≥40 years), even without ...
Posterior ischemic optic neuropathy ( PION) is a medical condition characterized by damage to the retrobulbar portion of the optic nerve due to inadequate blood flow (ischemia) to the optic nerve. Despite the term posterior, this form of damage to the eye's optic nerve due to poor blood flow also includes cases where the cause of inadequate ...
Largehead hairtails are elongated in shape with a thin pointed tail (they lack a fish tail in the usual form). The eyes are large, and the large mouth contains long pointed fang-like teeth. [3] Largehead hairtails grow to 6 kg (13 lb) in weight, [4] and 2.34 m (7 ft 8 in) in length. [2] Most are only 0.5–1 m (1 ft 8 in – 3 ft 3 in) long, [3 ...
Anticoagulants and Hair Loss. If you’ve been prescribed medication to prevent blood clots, you’re taking anticoagulants, or blood thinners — and telogen effluvium hair loss is a well-known ...
Flammer syndrome. Flammer syndrome is a described clinical entity comprising a complex of clinical features caused mainly by dysregulation of the blood supply. It was previously known as vascular dysregulation. [ 1] It can manifest in many symptoms, such as cold hands and feet, and is often associated with low blood pressure.
High blood pressure can cause tinnitus because it increases blood flow force through your veins and arteries, including those around your head, sinuses, and ears. As the blood is sent through your ...
The ophthalmic artery ( OA) is an artery of the head. It is the first branch of the internal carotid artery distal to the cavernous sinus. Branches of the ophthalmic artery supply all the structures in the orbit around the eye, as well as some structures in the nose, face, and meninges. Occlusion of the ophthalmic artery or its branches can ...
Glaucoma is a group of eye diseases that lead to damage of the optic nerve, which transmits visual information from the eye to the brain. Glaucoma may cause vision loss if left untreated. It has been called the "silent thief of sight" because the loss of vision usually occurs slowly over a long period of time. [ 5]