Gorillas with white sclera: A naturally occurring variation in a morphological trait linked to social cognitive functions. White sclera in humans amplifies gaze direction, whereas the all- dark eyes of apes are hypothesized to conceal gaze from others. This study examines WHR and SSI in humans (N = 1. N = 8. 5) engaged in direct and averted gazes and introduces a qualitative assessment of sclera color to evaluate variations in sclera pigmentation. The results confirm previous findings that humans possess a larger WHR than gorillas but indicate that humans and gorillas display similar amounts of visible sclera. The sclera is the white outer coating of the eye. It is tough, fibrous tissue that extends from the cornea (the clear front section of the eye) to the optic nerve at. Find sclera information, treatments for sclera and sclera. A grey patch has appeared inthe inner corner of my. Additionally, 7. 2% (N = 1. This questions whether gaze camouflage is the primary function of darkened sclera in non- human primates or whether other functional roles can be ascribed to the sclera, light or dark. We argue that white sclera evolved to amplify direct gazes in humans, which would have played a significant role in the development of ostensive communication, which is communication that both shows something and shows the intention to show something. We conclude that the horizontal elongation of the human eye, rather than sclera color, more reliably distinguishes human from great ape eyes, represented here by gorillas. Home > Eye Health > Symptoms Of Scratched Sclera. Symptoms Of Scratched Sclera: Natural Remedies And Healing Time. The white portion that you see in human eye is. VI DISORDERS OF SCLERA ROBERT M. The sclera comprises a group of tissues that. The sclera is opaque and appears white due to. Does clear eyes make the sclera part of the eye white? Black dots on sclera liver disease. Is it normal to have a yellowish patch on the sclera part of your eye. The sclera is visible as the white area of the eye. It is composed of connective tissue that forms a protective layer around the eye.
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January 2017
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