szemfenéket

Szemfenék refers to the fundus of the eye, which is the posterior part of the interior of the eyeball. It is visible through the pupil and can be examined using an ophthalmoscope. The structures that constitute the szemfenék include the retina, the optic disc (also known as the optic nerve head), the macula, and the blood vessels of the retina. The retina is a light-sensitive tissue lining the back of the eye that converts light into electrical signals, which are then transmitted to the brain via the optic nerve, allowing us to see. The optic disc is the area where the optic nerve leaves the eye and is characterized by the absence of photoreceptor cells, creating a natural blind spot. The macula is a small, specialized area of the retina responsible for sharp, central vision, essential for tasks like reading and recognizing faces. The retinal blood vessels are a network of arteries and veins that supply oxygen and nutrients to the retina and remove waste products. Examination of the szemfenék is a crucial part of a comprehensive eye examination, as it can reveal signs of various eye diseases and systemic conditions, such as glaucoma, diabetic retinopathy, macular degeneration, and hypertension. Changes in the appearance of the blood vessels, optic disc, or macula can indicate underlying health problems.