Netty anatomy

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stine is a sensitive to a light sensitive layer, which rolled back to the back of the eye . The thickness is only 0.2 mm and has approximately the size of the silver dollar.The Styted consists of 200 million neurons, many of which are photoreceptors. Fashion steniffs absorb light, and then convert and transmit these signals through the visual nerve into the brain.

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There are two main types of photoreceptors, rods and cones, on the retina retina.Fovea in Macula, which is the central space of the retina, has the highest concentration of cones, but not a rod. CONTR provide a better resolution of the image.The periphery of the retina, on the other hand, has many rods, and these types of photoreceptors are the best detectors.This organization of cones and bars means that the night star looked directly, will appear very boring, but if you can see with peripheral vision, it will be perceived as brighter and more visible.

Very similar to the film in the camera, the images pass through the eye lens and focus on the retina. Then, the retina converts these images into electrical signals and sends them to the brain.

When the doctor extends his eyes during a complete examination in , he says he or she looks at the eye.Fundus includes Retina,And also the following parts:

  • Rear pillar: rear rear on the back of the retina and includes a visual and macula / li>
  • Visitor’s head nerve: Optical nerve head with aVisual nerve assent on the back of the eye. It is made of millions of nerve fibers and transmits visual information to the brain for processing.
  • Macula: Macula: A specialized pigmented part of the retina in the center of the retina, which gives us a central vision. In the center of Makula is FOVYA. The Council has an area of better visual acuity.
  • Ecuador and medium peripheral retina: This is the area of the retina, as it extends from the rear post.
  • Serrata: Serrata Pray is the retinal area between the mesh and the ciliary case.This compound takes note of the transition from the non-specific field of the retina to the light sensitive field.

Disorders of the general retina

  • Retina or detachment sweaters: is considered a sweat of the retina or detachment where light-sensitive retina breaks or disconnected fromThe back of the eye, which feeds on oxygen and nutrition.
  • Diabetic retinopathy: Diabetic retinopathy There are people who have diabetes where blood vessels flow blood and liquid.Sometimes, the growth of new blood vessels that become destructive and can create a loss of vision, glaucoma and detachment of the retina, if not treated.
  • Central Sensous Retinopathy: Central serous retinopathy is a relatively common central retina That the cyst develops and the central view are distorted.
  • Yellow degeneration: Yellow degeneration is a Makula disease, in which there is a loss in the center of the field of vision. Mechanical changes in pigment changes occur and leak blood vessels grow under the machine.The loss of vision can be very slight to very heavy with the central blindness.
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