Retinoschisis

  • Separation within the sensory retina
  • Occurs at the level of the outer plexiform layer and the inner nuclear layer
  • Can be congenital or acquired
  • Seen as a transparent, thin, immobile, shallow elevation of inner retinal layers
  • Differs from shallow retinal detachment in that retinoschisis causes absolute scotoma whereas shallow retinal detachment causes relative scotoma
  • Acquired (senile) retinoschisis may predispose to retinal detachment
  • Usually affects the lower temporal quadrants, anterior to equator

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Relative scotoma

An area of the visual field in which the loss of vision is partial or may involve light of certain...

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