The choroid proper of the eye

The choroid proper, also known as the choroid, is one of the three main layers of the eye, located between the retina and sclera. This membrane consists of vascular tissues and plays an important role in providing blood supply to the eye.

The choroid is about 0.2-0.3 mm thick and occupies the posterior half of the eyeball. This membrane consists of many small blood vessels that provide oxygen and nutrients to the retina and other structures of the eye.

The choroid also contains melanin pigments, which help absorb excess light radiation and prevent it from being reflected inside the eye. This helps maintain clarity and quality of vision.

The choroid plays an important role in maintaining eye health and may be associated with various eye diseases such as chorioretinitis, choroidal nevus and others.

In conclusion, the choroid itself, or choroid, is an important part of the eye, providing blood supply and maintaining eye health. Understanding its role and functions can help in the diagnosis and treatment of various eye diseases.

The choroid proper (choroïdes) of the eye (chori) is the inner membrane of the visual apparatus, which surrounds the lens and provides nutrition to the retinal fibers. It consists of the choroid and choriocapillaries, which form a capillary network at the back of the eyeball.

The choroid itself is about 0.3 mm thick and contains many vessels, arteries and veins running from the iris to the retina. In the center, the choroid is thickened and is called the pigmented layer, which is covered with a membrane of a transparent substance. This is where light receptors called photoreceptors are located.