retinoschisis

noun
ret·​i·​nos·​chi·​sis | \ ˌret-ᵊn-ˈäs-kə-səs How to pronounce retinoschisis (audio) \
plural retinoschises\ -​ˌsēz How to pronounce retinoschises (audio) \ also retinoschisises

Medical Definition of retinoschisis

: degenerative splitting of the retina into separate layers