visual flicker
[/ˈvɪʒuəl ˈflɪkər/]
nounpl: visual flickers
cintilação visual
1. A rapid, repetitive variation in the brightness or intensity of light perceived by the eye, typically caused by fluctuations in electrical current or refresh rates
The monitor's visual flicker was causing eye strain during long work sessions.
A cintilação visual do monitor estava causando fadiga ocular durante longas sessões de trabalho.
2. In medical contexts, a visual disturbance characterized by a rapid, wavering appearance in the visual field, often associated with migraine aura
The patient reported experiencing visual flicker before the onset of a migraine headache.
A paciente relatou experimentar cintilação visual antes do início de uma enxaqueca.
3. A temporary fluctuation or instability in visual perception or image display
Adjusting the refresh rate eliminated the visual flicker on the screen.
Ajustar a taxa de atualização eliminou a cintilação visual na tela.
The term is widely recognized in Brazil and Portugal in both medical and technological contexts. In Brazil, 'cintilação visual' is the standard term used by ophthalmologists and IT professionals. The concern about visual flicker has grown significantly with increased screen time in modern workplaces, making it a common complaint in both healthcare and ergonomic discussions. In the USA and English-speaking countries, awareness of flicker-related eye strain has influenced monitor and lighting design standards.
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