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Floaters or muscae volitantes are slowly drifting blobs of varying size, shape, and transparency, which are particularly noticeable when viewing a bright, featureless background (such as the sky) or a point source of diffuse light very close to the eye. They are shadow images of objects floating in liquid between the retina and the gel inside ...
They had a single eye in the centre of the forehead. Balor, a giant in Irish mythology, with one eye in his forehead that would wreak destruction when opened; Bungisngis, one-eyed giants of Philippine folklore; Cyclopes (singular: Cyclops), one-eyed giants in Greek mythology, including Polyphemus. They had a single eye in the centre of their ...
Christopher William Tyler is a neuroscientist, [1] creator of the autostereogram ("Magic Eye" pictures), [2] and is the Head of the Brain Imaging Center at the Smith-Kettlewell Eye Research Institute [1] He also holds a professorship at City University of London. [3]
Normal fundus photographs of the left eye (left image) and right eye (right image), seen from front so that left in each image is to the person's right. Each fundus has no sign of disease or pathology. The gaze is into the camera, so in each picture the macula is in the center of the image, and the optic disk is located towards the nose. Both ...
Blue–red contrast demonstrating depth perception effects 3 Layers of depths "Rivers, Valleys & Mountains". Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or red–green colors, but can also be perceived with red–grey or blue–grey images.
The inner black disk is allowed to move freely within the larger clear plastic shell, which makes the eyes appear to move when the googly eyes are tilted or shaken. A googly eye attached to a hammer The plastic shells come in a variety of sizes ranging from diameters of 3 ⁄ 16 inch (4.8 mm) to over 24 inches (610 mm).
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The Ponzo illusion is an example of an illusion which uses monocular cues of depth perception to fool the eye. But even with two-dimensional images, the brain exaggerates vertical distances when compared with horizontal distances, as in the vertical–horizontal illusion where the two lines are exactly the same length.