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Scintillating scotoma is a common visual aura that was first described by 19th-century physician Hubert Airy (1838–1903). Originating from the brain, it may precede a migraine headache, but can also occur acephalgically (without headache), also known as visual migraine or migraine aura. [4]
Photopsia; This is an approximation of the zig-zag visual of a scintillating scotoma as a migraine aura. It moves and vibrates, expanding and slowly fading away over the course of about 20 minutes.
Therefore, if the visual area is affected, the aura will consist of visual symptoms, while if a sensory one, then sensory symptoms will occur. Epileptic auras are subjective sensory or psychic phenomena due to a focal seizure , i.e. a seizure that originates from that area of the brain responsible for the function which then expresses itself ...
Generally, diseases outlined within the ICD-10 codes H53-H54 within Chapter VII: Diseases of the eye, adnexa should be included in this category. Subcategories This category has the following 2 subcategories, out of 2 total.
Typically, visual disturbances in MA patients begin as a zig zag line in the middle of the ocular field which appears to be flickering. [7] Some patients describe symptoms of an expanding red circle in the centre of their visual field. [8] A scotoma often occurs when the visual disturbance moves to the periphery of the visual field. [7]
Generally, diseases outlined within the ICD-11 codes MB27.0-MB27.Z within Symptoms, signs or clinical findings, not elsewhere classified should be included in this category. Subcategories This category has the following 2 subcategories, out of 2 total.
A scotoma may include and enlarge the normal blind spot. Even a small scotoma that happens to affect central or macular vision will produce a severe visual disability, whereas a large scotoma in the more peripheral part of a visual field may go unnoticed by the bearer because of the normal reduced optical resolution in the peripheral visual field.
Micropsia is a condition affecting human visual perception in which objects are perceived to be smaller than they actually are. Micropsia can be caused by optical factors (such as wearing glasses), by distortion of images in the eye (such as optically, via swelling of the cornea or from changes in the shape of the retina such as from retinal edema, macular degeneration, or central serous ...