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2. Photosensitive epilepsy - Wikipedia

   en.wikipedia.org/wiki/Photosensitive_epilepsy

   Photosensitive epilepsy (PSE) is a form of epilepsy in which seizures are triggered by visual stimuli that form patterns in time or space, such as flashing lights, bold, regular patterns, or regular moving patterns. PSE affects approximately one in 4,000 people (5% of those with epilepsy).

3. Flicker vertigo - Wikipedia

   en.wikipedia.org/wiki/Flicker_vertigo

   Flicker vertigo, sometimes called the Bucha effect, is "an imbalance in brain-cell activity caused by exposure to low-frequency flickering (or flashing) of a relatively bright light." [1] It is a disorientation-, vertigo-, and nausea-inducing effect of a strobe light flashing at 1 Hz to 20 Hz, approximately the frequency of human brainwaves.

4. LED incapacitator - Wikipedia

   en.wikipedia.org/wiki/LED_Incapacitator

   A light emitting diode (LED) incapacitator is a weapon designed like a flashlight. It emits an extremely bright, rapid, and well-focused series of "differently-colored random pulses". It emits an extremely bright, rapid, and well-focused series of "differently-colored random pulses".

5. Photophobia - Wikipedia

   en.wikipedia.org/wiki/Photophobia

   Photophobia is a medical symptom of abnormal intolerance to visual perception of light. [1] As a medical symptom, photophobia is not a morbid fear or phobia, but an experience of discomfort or pain to the eyes due to light exposure or by presence of actual physical sensitivity of the eyes, [2] though the term is sometimes additionally applied to abnormal or irrational fear of light, such as ...

6. Mind machine - Wikipedia

   en.wikipedia.org/wiki/Mind_machine

   A mind machine (aka brain machine or light and sound machine) uses pulsing rhythmic sound, flashing light, or a combination of these. Mind machines can induce deep states of relaxation [1] or concentration. [2] The process applied by some of these machines is said to induce brainwave synchronisation or entrainment. [3]

7. Laser safety - Wikipedia

   en.wikipedia.org/wiki/Laser_safety

   This information led to an inquiry in the US Congress. [5] Exposure to hand-held laser light under such circumstances may seem trivial given the brevity of exposure, the large distances involved and beam spread of up to several metres. However, laser exposure may create dangerous conditions such as flash blindness. If this occurs during a ...