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It may occur as an isolated symptom without headache in acephalgic migraine. [7] In teichopsia, migraine sufferers see patterns in the shape of the walls of a star fort. As the scotoma area expands, some people perceive only a bright flickering area that obstructs normal vision, while others describe seeing various patterns.
Photopsias is defined as an effect on the vision that causes appearances of anomalies in the vision. Photopsias usually appear as: flickering lights; shimmering lights; floating shapes; moving dots; snow or static; Photopsias are not generally a condition on their own, but a symptom of another condition.
The left and right eye see different, seemingly random, dot patterns; a person viewing through both eyes sees a combination of both left and right visual field disturbances. While seeing the phenomenon, lightly pressing inward on the sides of the eyeballs at the lateral canthus causes the movement to stop being fluid and the dots to move only ...
For example, the Mayo Clinic says, you might see: Blind spots, which might be outlined with geometric designs. Shimmering stars or spots. Zigzag lines that slowly float across your vision. Flashes ...
Visual snow syndrome (VSS) is an uncommon neurological condition in which the primary symptom is that affected individuals see persistent flickering white, black, transparent, or colored dots across the whole visual field. [7] [4] Other common symptoms are palinopsia, enhanced entoptic phenomena, photophobia, and tension headaches.
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.
Cyanopsia is a symptom rather than a disease, so the focus is on identifying the underlying cause that is making Cyanopsia occur. Doctors ask about recent cataract surgery or the use of medications like sildenafil, which are known to cause cyanopsia. The timing and duration of symptoms help distinguish cyanopsia from other vision issues. [7]
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