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RETINA

The retina is a transparent, thin layer of light sensitive cells that line the inside back wall of the eye. The retina is very important for good vision. Referring to the diagram of a camera, the retina is like the film of a camera (Fig 1).


Fig 1: Cross section of eye showing structures of the eye ball
 

If the film of the camera is damaged, there will not be good quality pictures. Similarly, if the retina is damaged, the images received by the brain will be blurred and the vision will not be clear. In the colour picture of the normal retina shown, the central part of the retina is called the macula (Fig 2).

 


Fig 2: Cross section of eye showing structures of the eye ball


The macula is the area of the retina most critical to fine, discriminatory central vision. The rest of the retina outside the macula is important for peripheral (side) vision.

Common Posterior Segment Disease:

  • Retinal tears & detachment
  • Diabetic Retinopathy & Advanced diabetic eye disease
  • Age-related macular degeneration & Macular diseases
  • Retinal vascular disorder

Symptoms of Posterior Segment Diseases:

  • Floaters & flashes of light in the eye
  • Blurring of vision
  • Visual field defect
  • Distortion of vision

If any of the above symptoms are experienced, please seek medical attention as early as possible.