What you need to know about diabetic retinopathy.

@article{Smith1991WhatYN,
  title={What you need to know about diabetic retinopathy.},
  author={Charles Welstead Smith and J P Feldman},
  journal={Rhode Island medical journal},
  year={1991},
  volume={74 10},
  pages={
          459-62
        }
}
The retina is the layer of tissue at the back of the inner eye. It changes light and images that enter the eye into nerve signals that are sent to the brain which enables us to “see” things. Often, there are no symptoms until the damage to the eyes is severe. Symptoms may include blurred vision and slow vision loss over time, floaters, shadows or missing areas of vision, and/or trouble seeing at night. 

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