PHOSPHENES Meaning and
Definition
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Phosphenes are luminous visual sensations that occur without any external source of light. These sensations can manifest in various forms, such as spots, stars, sparks, or swirling patterns, and are perceived by an individual even when their eyes are closed. Phosphenes can be induced by different means, including mechanical pressure or stimulation of the eyes, electric shocks, or exposure to intense light. They are a result of the stimulation of the visual system, particularly the retinal cells, which send signals to the brain, leading to the perception of light.
Phosphenes are commonly experienced by people during moments of relaxation, such as when closing their eyes in a dark room. The pressure applied to the eyes, whether by rubbing or gently pressing on the eyelids, can also trigger these visual sensations. Additionally, Phosphenes may occur as a result of retinal detachment, migraines, or certain medical conditions affecting the optic nerve.
The term "Phosphene" originates from the Greek words "phos," meaning light, and "phainein," meaning to show or appear. While Phosphenes are often regarded as harmless and transient phenomena, their occurrence can sometimes indicate underlying medical conditions. Therefore, individuals experiencing persistent or unusual Phosphenes should consult with a healthcare professional for proper evaluation and diagnosis.
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Luminous impressions and circles seen with the eyelids closed, after the sudden compression of the eyeball.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
Common Misspellings for PHOSPHENES
- ohosphenes
- lhosphenes
- -hosphenes
- 0hosphenes
- pgosphenes
- pbosphenes
- pnosphenes
- pjosphenes
- puosphenes
- pyosphenes
- phisphenes
- phksphenes
- phlsphenes
- phpsphenes
- ph0sphenes
- ph9sphenes
- phoaphenes
- phozphenes
- phoxphenes
- phodphenes
Etymology of PHOSPHENES
The word "phosphenes" comes from the Greek roots "phos" (φῶς), meaning "light", and "phaino" (φαίνω), meaning "to appear" or "to be visible". The term was coined in the mid-19th century by British physician and researcher Charles Babbage, who derived it from these Greek roots to describe the phenomenon of seeing lights or visual sensations without an external stimulus.
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