Anotomy

The lens ligaments - also called zonular fibers - are elastic fibers arranged in a spoke-like pattern around the capsule in which the lens of the eye is located. They hold the lens in position and transmit the movements of the ciliary muscle to it. Thus, they are an important part of accommodation. During lens replacement, both the ciliary muscle and the...

The external eye muscles are responsible for the movements of the eyes, i.e. changing the direction of gaze. They attach to different parts of the eyeball. Humans have four straight and two oblique eye muscles. Their interaction is complex and therefore they are able to perform all rotational movements of the eye in all directions. Unlike the internal eye muscles...

The sclera forms the outermost layer of the eye, it is "the white of the eye" that can be seen from the outside around the pupil and iris. It is therefore also called the white skin of the eye. Called "sclera" in Latin, the sclera protects the eye from external influences and ensures that it keeps its shape. The sclera...

The choroid is located between the sclera and cornea and extends over the entire posterior part of the eyeball. It has a high density of blood vessels and supplies the retina with nutrients and oxygen. The choroid merges with the ciliary body in the anterior segment of the eye. In addition, the choroid is also responsible for the thermal regulation of the retina...

While the retina is supplied by the choroid from one side, blood vessels also lie directly on the back of the eye - the retina. This network of vessels comes from the central artery (arteriole), which emerges directly from the optic nerve, and covers the entire retina. The more branched these vascular branches become, the smaller the diameter...

The vitreous body fills most of the interior of the eye and thus sits between the lens and the retina. Consequently, light entering through the pupil and lens must pass through the vitreous before it reaches the retina. The vitreous body consists of a gel-like substance that is 98 percent water, as well as sugar and protein (hyaluronic acid) and a...

The retina is responsible for converting light entering the eye into nerve impluses. The retina is very sensitive to light and lines the inside of the eye. It is occupied by approximately 127 million light receptors. The retina consists of a total of six cell layers with different functions. The light-active sensory cells are the so-called cones and rods. While the cones...

The yellow spot is located in the center of the retina and is only about three to five millimeters in size. It gets its name from a yellow pigment that is particularly concentrated at this spot - it is also called the macula. In its center lies the retinal pit - the point of sharpest vision. This is where the light receptors...

The optic nerve is responsible for ensuring that information from the retina reaches the brain. The bundle of millions of nerve fibers converts the light stimuli from the retina into impulses and transmits them to the brain. At the point where the optic nerve exits the retina, there are no light receptors. Therefore, the brain lacks a light receptor at this...

The inner shell forms the retina. It is used to receive light stimuli. The light impressions are transmitted to the brain via the optic nerve and processed there.