ISSN: 1300-0365
Dil: Türkçe
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Biochemistry Of Vision
Dr. Emre KAMBUROĞLU,a Dr. Kudret DÜRÜK,a Dr. Erhan ÖZYOLa
aGöz Hastalıkları AD, Ankara Üniversitesi Tıp Fakültesi, ANKARA
In this article, the biochemical bases of vision and the mechanism of the color vision is evaluated. There are 2 types of receptor cells in retina called rod and cone cells. These cells consist of 4 parts; outer segment, inner segment, nucleus and synaptic region. The outer segment has photosensitive pigments. These pigments called rhodopsin at rode cells and one of the 3 color pigments at cone cells. Rhodopsin transformed into metarhodpsin 2, when it absorbs light energy. Metarhodopsin-2 stimulates the electrical changes in rod cells and sends the image to central nervous system. Color vision is composed by mixture of the monochromatic lights which are red, green and blue in different composition.Keywords: Biochemistry of vision, rod, cone, rhodopsin, color visionTurkiye Klinikleri J Ophthalmol 2005, 14:180-187
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