utóképek

utóképek refers to the lingering visual aftereffects experienced after looking at a bright object or light source. This phenomenon is a common and harmless visual illusion. When the photoreceptor cells in the retina, specifically the rods and cones, are exposed to intense light, they become temporarily desensitized. Upon shifting gaze to a darker area, these overstimulated cells take a brief moment to recover their normal sensitivity. This period of recovery results in a perception of the initial bright image, often in complementary colors, superimposed on the new visual field. The intensity and duration of the utóképek depend on factors such as the brightness of the original stimulus, the length of exposure, and individual variations in retinal sensitivity. Common examples include seeing spots or colored shapes after looking at the sun (which should always be avoided directly), a camera flash, or a bright computer screen for an extended time. While generally fleeting, in rare instances, persistent utóképek could indicate underlying ocular conditions and warrant consultation with a medical professional.