Prab: CSV import

2025-03-17T12:40:50Z

CSV import

← Older revision		Revision as of 12:40, 17 March 2025
Line 27:		Line 27:
	{{Ophthalmology-stub}}		{{Ophthalmology-stub}}
	{{No image}}		{{No image}}
			__NOINDEX__

Prab: CSV import

2025-02-10T16:37:29Z

CSV import

← Older revision		Revision as of 16:37, 10 February 2025
Line 26:		Line 26:
	[[Category:Medical signs]]		[[Category:Medical signs]]
	{{Ophthalmology-stub}}		{{Ophthalmology-stub}}
			{{No image}}

Prab: CSV import

2024-06-12T22:25:57Z

CSV import

New page

{{clear}}== Entopic ==
'''Entopic''' refers to phenomena or sensations that originate within the body, particularly within the visual system. The term is often used in the context of [[entoptic phenomena]], which are visual effects whose source is within the eye itself. These phenomena can include floaters, flashes, and other visual disturbances that are not caused by external stimuli.
=== Entoptic Phenomena ===
Entoptic phenomena are visual effects that arise from within the eye. These can include:
* [[Floaters]]: Small, shadowy shapes that appear to drift across the field of vision. They are caused by tiny clumps of gel or cells inside the [[vitreous humor]] of the eye.
* [[Phosphenes]]: Flashes of light that are not caused by light entering the eye. They can be induced by mechanical stimulation (such as rubbing the eyes), electrical stimulation, or spontaneous activity within the [[retina]] or [[visual cortex]].
* [[Blue field entoptic phenomenon]]: The appearance of tiny bright dots moving rapidly along squiggly lines in the visual field, especially when looking at a bright blue sky. This is caused by white blood cells moving through the capillaries in front of the [[retina]].
=== Causes ===
Entopic phenomena can be caused by various factors, including:
* [[Aging]]: As people age, the vitreous humor can shrink and form clumps, leading to floaters.
* [[Eye trauma]]: Physical impact or pressure on the eye can cause phosphenes.
* [[Retinal detachment]]: A serious condition where the retina peels away from its underlying layer of support tissue, which can cause flashes and floaters.
* [[Migraine]]: Some people experience visual disturbances, known as [[aura (symptom)|aura]], which can include entoptic phenomena, before the onset of a migraine headache.
=== Diagnosis and Treatment ===
Most entoptic phenomena are harmless and do not require treatment. However, sudden changes in the number or type of entoptic phenomena can indicate a serious condition, such as retinal detachment, and should be evaluated by an [[ophthalmologist]].
* '''Diagnosis''': Diagnosis typically involves a comprehensive eye examination, including a [[dilated fundus examination]] to inspect the retina and vitreous humor.
* '''Treatment''': Treatment depends on the underlying cause. For example, retinal detachment may require surgical intervention, while floaters usually do not require treatment unless they significantly impair vision.
=== Related Pages ===
* [[Visual system]]
* [[Retina]]
* [[Vitreous humor]]
* [[Ophthalmology]]
* [[Migraine]]
[[Category:Ophthalmology]]
[[Category:Visual system]]
[[Category:Medical signs]]
{{Ophthalmology-stub}}

Entopic - Revision history

Prab: CSV import

Prab: CSV import

Prab: CSV import