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The retina lines the inside of the eye. It is light-sensitive and communicates visual messages to the brain. If the retina detaches, it moves and shifts from its normal position. This can cause photopsia, but can also cause permanent vision loss. Medical attention is needed to prevent vision loss.
Many variations occur, but scintillating scotoma usually begins as a spot of flickering light near or in the center of the visual field, which prevents vision within the scotoma area. It typically affects both eyes, as it is not a problem specific to one eye. [5] [6] The affected area flickers but is not dark. It then gradually expands outward ...
Retinal migraine is associated with transient monocular visual loss in one eye lasting less than one hour. [1]During some episodes, the visual loss may occur with no headache and at other times throbbing headache on the same side of the head as the visual loss may occur, accompanied by severe light sensitivity and/or nausea.
Symptoms include eye pain, eye redness, floaters and blurred vision, and ophthalmic examination may show dilated ciliary blood vessels and the presence of cells in the anterior chamber. Uveitis may arise spontaneously, have a genetic component, or be associated with an autoimmune disease or infection.
Visual auras can be simple or complex. Simple visual symptoms can include static, flashing, or moving lights/shapes/colors caused mostly by abnormal activity in the primary visual cortex. Complex visual auras can include people, scenes, and objects which results from stimulation of the temporo-occipital junction and is lateralized to one hemifield.
In an eye examination, light-colored spots on the retina are seen. Complete loss of visual acuity may happen [citation needed] The name of the condition comes from the small light-colored fundus spots on the retina, scattered in a pattern like birdshot from a shotgun, but these spots might not be present in early stages. [citation needed]
The main proteins in hair are biotin and iron so deficiencies would result in a loss of hair. Infections: Unilateral madarosis (only one eye) may occur in tuberculoid leprosy from granulomatous infiltration of hair follicles ultimately destroying them. Infections like syphilis by causing a moth-eaten appearance of the eyebrow hair loss.
Vitamin B 12 deficiency: Anemia, neurological and digestive disorders. [36] [37] This may result in feeling tired, shortness of breath, lightheadedness, headaches, mouth ulcers, pale skin, rapid heartbeat, loss of appetite, hair loss, low blood pressure, decreased ability to think, joint pain, numbness and tingling to the fingers and toes, and ...