If the choroid becomes infected, the macula and optic nerve can be affected as well- many times, causing severe vision loss and even blindness. This vascular membrane also contains cells that contribute to scleral growth, and its blood flow may help to regulate the temperature within the retina. Melanin protects the blood vessels in the choroid from toxic light, and absorbs light to prevent light reflections that may interfere with vision clarity- this pigment can sometimes cause the appearance of “red eyes” in flash photography. The choroid also contains a dark-colored pigment, called melanin. Bruch’s membrane – the innermost layer of the choroid.Choriocapillaris – contains capillaries.Sattler’s layer- contains medium-size blood vessels.Haller’s layer – contains large blood vessels.The choroid contains four different layers: This membrane forms the uveal tract, along with the iris and ciliary body, and is responsible for bringing oxygen and nutrients to the outer part of the retina. The choroid is a thin vascular tissue, located between the sclera and the retina. This fibrous tissue is thickest in the back of the eye, as it provides extra protection to the area around the optic nerve. The sclera accounts for more than 80 percent of the eye’s surface area, stretching from the cornea all the way to the optic nerve. Lamina fusca- the innermost area that consists of elastic fibers.Sclera proper- the dense white tissue that gives the sclera its white color.Episclera- the loose connective tissue located directly under the conjunctiva.The sclera is made up of tough fibrous tissue and is responsible for giving the eye it’s round shape and protecting the inner structures of the eye. ![]() The sclera is the outermost layer of the eye, also known as the white of the eye. This condition can also cause the appearance of floaters which generally go away over time, and typically do not cause any long term effects. When the vitreous becomes thin, it can cause posterior vitreous detachment, when the retina detaches from the back of the eye. Many people notice these floaters out of the corner of their eyes. The collagen and proteins may also form clumps or strings which float around the vitreous, causing shadows to form over the retina. Over time, the vitreous loses its jelly-like consistency and becomes smaller and more liquidy. ![]() The vitreous also enables the retina to remain in its place, connected to the back of the eye. The vitreous is responsible for maintaining the shape of the eyeball, and protecting its inner structures. Most of the vitreous consists of water, while the rest is a combination of collagen, proteins, salts and sugars- all contributing to its gelatinous consistency. ![]() The vitreous humor, commonly called the vitreous, is a clear jelly-like fluid that fills the space between the lens and the retina. (You may remember the anterior chamber, located in the front of the eye). The vitreous chamber is located in the back of the eye, and is the largest of the eye’s chambers- accounting for around 80 percent of the eye. The following ocular structures lie within the deepest layer of the eye, also known as the posterior area of the eye. These impulses travel from your eye to your brain, to be processed, organized and interpreted- providing you with an image you can see and understand. In order to see clearly, light is focused onto the back of your eye where it is transformed into electrical impulses. Did you know that the back of the eye is responsible for transferring visual information from the eye to the brain?
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