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
