What Is Photopsia?
The medical term for the subjective experience of seeing flashes of light, sparks, streaks, or shimmering dots that are not caused by external light sources but by stimulation of the retina.
read more about photopsia ...Link to This Resource Page
Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.
To display this...
Copy this HTML:
Underlying Mechanism
Usually caused by mechanical stimulation (traction) of the retina, most commonly associated with the aging vitreous gel shrinking and pulling on the retina (Posterior Vitreous Detachment, or PVD).
Visual Presentation
Flashes are usually quick and linear, often described as "lightning" or "shooting stars." They are typically more visible when looking into a dark environment or closing the eyes.
Emergency Sign
An acute shower of new photopsia, especially when accompanied by a new increase in floaters or a shadow in peripheral vision, is a classic warning sign of a developing Retinal Tear or Detachment.
How does the brain interpret traction as light?
The retina only sends one kind of signal to the brain (a nerve impulse). Whether it's stimulated by light or physical pulling, the brain interprets that signal as light.
Is a migraine aura considered photopsia?
While a migraine aura (scintillating scotoma) involves light, it is technically a hallucination caused by the visual cortex, whereas photopsia is caused by retinal stimulation.
Can certain medications cause photopsia?
Yes. Some medications, particularly certain antibiotics or chemotherapeutic agents, can cause drug-induced retinal toxicity, leading to temporary photopsia.