![]() Because of the variation between individuals, and the inability for two observers to share a nearly identical stimulus, these phenomena are unlike most visual sensations. This variance is not surprising because the specific aspects of the eye that produce these images are unique to each individual. Helmholtz comments on phenomena which could be seen easily by some observers, but could not be seen at all by others. Because entoptic images are caused by phenomena within the observer's own eye, they share one feature with optical illusions and hallucinations: the observer cannot share a direct and specific view of the phenomenon with others. Hence, they are different from optical illusions, which are perceptual effects that arise from interpretations of the image by the brain. Reproducir en Spotify Reproducir en YouTube. Images continue to appear after they are no longer visible (palinopsia). Visual effects within the eye (entoptic phenomena). ![]() Small floaters in the vision field (myodesopsia). However, its psychophysical and subjective nature limits its usefulness. These perceptions are called entoptical." Entoptic images have a physical basis in the image cast upon the retina. Lee sobre Entoptic Phenomena (Blue Sky Sprites) de Jackson McGrath y mira las ilustraciones, la letra y artistas similares. Bright dots moving fast when looking into blue light (blue field entoptic phenomenon). Blue-field entoptic simulation (BFS) is a non-invasive experimental method of measuring average leucocyte velocity in a 14-degree area around the foveola in the inner nuclear and outer plexiform layers ( Marshall 1935 Riva & Petrig 1980 Yap & Brown 1994 ). In Helmholtz's words "Under suitable conditions light falling on the eye may render visible certain objects within the eye itself. ![]() Entoptic phenomenon Entoptic phenomena are visual effects whose source is within the eye itself.
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