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How is retinal detachment treated?



This light that strikes the retina causes a complex biochemical change within the layers of the retina and this, in turn, stimulates an electrical response at other layers of the retina. The nerve endings in the retina transmit these electrical signals to the brain via the optic nerve. Within specific areas of the brain, this electrical energy is processed for us to see and understand what we are seeing. The retina has been compared to a film camera. However, the film, when used, has a permanent image on it. The retina, however, is constantly renewed chemically and electrically, and this allows us to see millions of different images every day, without being overlapped. The retina is the size of a postage stamp and is composed of two zones:

  • The central part, called the macula
  • part much more peripheral

The cells of the light receptors in the retina are of two types:

  • Rods, to see in low light conditions
  • Cones, for sharpness of vision and see the colors

The peripheral retina allows us to see objects on both sides (peripheral vision) and, therefore, provides the vision necessary for a person to move in a safe manner. However, since this part of the retina contains a lower concentration of cones, does not allow the perception of visual details. Its highest concentration of rods provides a better vision in dark conditions. On the contrary, the macula is a small central area of ​​the retina that science news contains a high concentration of cones. Consequently, the macula allows the clear central vision of the details in activities such as reading or threading a needle. The macula is particularly sensitive to changes in circulation, in particular those that occur with aging, such as the reduction of blood flow. The retina contains: