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Cyanopsia. Cyanopsia is a medical term for seeing everything tinted with blue. It is also referred to as blue vision. Cyanopsia often occurs for a few days, weeks, or months after removal of a cataract from the eye. Cyanopsia also sometimes occurs as a side effect of taking sildenafil, tadalafil, or vardenafil. [1]
Closed-eye hallucinations and closed-eye visualizations ( CEV) are hallucinations that occur when one's eyes are closed or when one is in a darkened room. They should not be confused with phosphenes, perceived light and shapes when pressure is applied to the eye's retina, or some other non-visual external cause stimulates the eye.
Nazar (amulet) Eye beads or nazars – amulets against the evil eye – for sale in a shop. An eye bead or naẓar (from Arabic نَظَر [ˈnaðˤar], meaning 'sight', 'surveillance', 'attention', and other related concepts) is an eye-shaped amulet believed by many to protect against the evil eye. The term is also used in Azerbaijani ...
The blue field entoptic phenomenon is an entoptic phenomenon characterized by the appearance of tiny bright dots (nicknamed blue-sky sprites) moving quickly along undulating pathways in the visual field, especially when looking into bright blue light such as the sky. [1] The dots are short-lived, visible for about one second or less, and travel ...
Disks or balls, consisting of concentric blue and white circles (usually, from inside to outside, dark blue, light blue, white, and dark blue) representing an evil eye are common apotropaic talismans in West Asia and the Balkans, found on the prows of boats and elsewhere; in some forms of the folklore, the staring eyes are supposed to bend the ...
Feathers on a Blue Jay are mostly blue, with a touch of white on the tip, while a black horizontal pattern breaks up the blue a bit, depending on where the feather came off of the bird.
God's eye. A God's eye (in Spanish, Ojo de Dios) is a spiritual and votive object made by weaving a design out of yarn upon a wooden cross. Often several colors are used. They are commonly found in Mexican, Peruvian, and Latin American communities, among both Indigenous and Catholic peoples. Ojos de Dios are common in the Pueblos of New Mexico.
Eye color is a polygenic phenotypic trait determined by two factors: the pigmentation of the eye 's iris [1] [2] and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris. [3] : 9. In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of melanin in ...