CHOROIDS Meaning and
Definition
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The choroids, also known as the choroid layer or choroid coat, is a pigmented vascular layer of the eye that lies between the retina and the sclera. It is one of the three main layers of the eye, along with the sclera and the retina. The choroids contains a dense network of blood vessels that nourish the cells of the retina, which is responsible for the visual process.
Composed of highly pigmented melanocytes, the choroids appear dark due to its high blood supply and pigmentation. The pigmentation helps to absorb any stray light that enters the eye, preventing it from reflecting back and causing visual distortions. This function enhances the sharpness and clarity of the visual image.
In addition to its role in the nutrition and oxygenation of the retina, the choroids also plays a vital role in regulating the temperature of the eye. The abundant blood vessels in the choroids help to dissipate excess heat, thereby maintaining the optimal temperature for the efficient functioning of the retina and other ocular structures.
Various eye disorders can affect the choroids, such as choroidal melanoma, choroiditis, and choroidal neovascularization. These conditions can lead to vision changes, visual disturbances, and potential vision loss if left untreated. Proper diagnosis and treatment of choroidal diseases are crucial for preserving visual function and ensuring the health of the eye.
Common Misspellings for CHOROIDS
Etymology of CHOROIDS
The word "choroids" is derived from the Greek word "choroeides", which means "like a fence" or "enclosing". It is a combination of "choros", meaning "circle" or "ring", and "eidos", meaning "form" or "shape". The term "choroids" is typically used in anatomy and refers to the choroid, which is the vascular layer that lies between the retina and the sclera in the eye.
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