Retina

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Definición

Es la capa de tejido sensible a la luz que se encuentra en la parte posterior interna del ojo y actúa como la película de una cámara. Las imágenes pasan a través del cristalino del ojo y son enfocadas en la retina. La retina convierte luego estas imágenes en señales eléctricas y las envía a través del nervio óptico al cerebro.

La retina normalmente es de color rojo debido a su rico riego sanguíneo. Un oftalmoscopio le permite al médico ver a través de la pupila y el cristalino hasta la retina. Si el médico observa cualquier cambio del color o la apariencia de la retina, esto puede ser indicio de una enfermedad.

Cualquier persona que experimente cambios en la percepción de la nitidez o del color, destellos de luces, moscas volantes o distorsión en la visión debe hacerse examinar la retina.

Retina

Nombres alternativos

Información

Referencias

Yanoff M, Cameron D. Disorders of the visual system. In: Goldman L, Schafer AI, eds.Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 431.

Version Info

  • Last reviewed on 4/18/2013
  • David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.

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This page was last updated: May 20, 2014

         
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