Netthinnearteriene

Netthinnearteriene, also known as retinal arteries, are the blood vessels that supply oxygen and nutrients to the retina of the eye. The retina is a light-sensitive tissue lining the back of the eye, responsible for converting light into neural signals that are sent to the brain for interpretation as vision. There are two main retinal arteries, the central retinal artery and the ciliary arteries. The central retinal artery enters the eye through the optic nerve and then branches out to supply the inner layers of the retina. The ciliary arteries, on the other hand, are responsible for supplying the outer layers of the retina, including the photoreceptor cells.

Blockage of a retinal artery can lead to a sudden loss of vision, a condition known as central retinal artery occlusion or branch retinal artery occlusion, depending on which artery is affected. This can be caused by blood clots, atherosclerosis, or other vascular conditions. Damage to the retinal arteries can also be a sign of systemic diseases such as diabetes and hypertension, and can lead to vision-threatening complications like diabetic retinopathy and hypertensive retinopathy. Regular eye examinations are important for monitoring the health of the retinal arteries and detecting any early signs of disease.