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Pecten oculi

Pecten oculi

The pecten or pecten oculi is a vascular section of the choroid in the eye of a bird. It is non-sensory and is a pigmented structure that projects into the vitreous body from the point where the optic nerve enters the eyeball. [cite book |last= Walls |title= The Vertebrate Eye and its Adaptive Radiation |publisher= Hafner |year= 1942 ] The pecten is believed to both nourish the retina and control the pH of the vitreous body. [Kiama, S G.;J. N. Maina;J. Bhattacharjee and K. D. Weyrauch (2001) Functional morphology of the pecten oculi in the nocturnal spotted eagle owl (Bubo bubo africanus), and the diurnal black kite (Milvus migrans) and domestic fowl (Gallus gallus var. domesticus): a comparative study. Journal of Zoology 254: 521-528] It is present in all birds and some reptiles. [Citation| last = Podulka| first = Sandy | last2 = Rohrbaugh, Jr.| first2 = Ronald| last = Bonney| first = Rick| title = Handbook of Bird Biology| place= Princeton, NJ| publisher = Princeton University Press| year = 2004| edition = Second| isbn = 0-938-02762-X]

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