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The dots are usually black/gray on a white background and gray/white on a black background; however, they can also be transparent, white flashing, or colored. Presence of at least 2 additional visual symptoms of the 4 following categories: i. Palinopsia. At least 1 of the following: afterimages or trailing of moving objects. ii.
J. Paul Getty, one of the twelve famous people George Ohsawa claimed were suffering from sanpaku because of visible sclerae under their irises. [1]Sanpaku gan (三白眼; Chinese: 三白眼; pinyin: Sānbáiyǎn) or sanpaku (三白) is a Japanese term meaning "three whites", most often used in English to refer to a folk belief according to which the visibility of the sclera above or under the ...
White cells are larger than red blood cells and can be larger than the diameter of a capillary, so must deform to fit. As a large, deformed white blood cell goes through a capillary, a space opens up in front of it and red blood cells pile up behind. This makes the dots of light appear slightly elongated with dark tails.
The sclera, [note 1] also known as the white of the eye or, in older literature, as the tunica albuginea oculi, is the opaque, fibrous, protective outer layer of the eye containing mainly collagen and some crucial elastic fiber. [2] In the development of the embryo, the sclera is derived from the neural crest. [3]
Cicadas have blue eyes because they are mutants. The University of Connecticut observed that some periodical cicadas have blue or white eyes, or some may lack red pigmentation in their wing veins ...
Blue eyes are also found in southern Europe, Central Asia, South Asia, North Africa and West Asia. [57] [58] Approximately 8% to 10% of the global population have blue eyes. [34] A 2002 study found that the prevalence of blue eye color among the white population in the United States to be 33.8% for those born from 1936 through 1951.
The cooperative eye hypothesis is not the only one that has been proposed to explain the appearance of the human eye. Other hypotheses include the proposal that white sclerae are a sign of good health, useful in mate selection, or that eye visibility promotes altruistic behaviour by letting people know they are being watched. A study by the Max ...
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