subretinal
/ˌsʌb.rɪˈtɪn.əl/Definitions
1. adjective
Relating to or situated below the retina, especially in the choroid layer of the eye.
“The subretinal layer is a critical area for treating certain eye diseases.”
2. noun
The layer of the eye beneath the retina, especially the choroid layer.
“The ophthalmologist examined the subretinal area for signs of damage.”