part of part of develops from develops from neural crest organ component layer suprachoroid lamina lamina suprachoroidea On the external surface of the optic choroid is a thin membrane, the suprachoroid lamina, composed of delicate non-vascular lamellae-each lamella consisting of a network of fine elastic fibers among which are branched pigment cells. UBERON:0010293 FMA:58368 SCTID:280607003 FMA treats this as part of the sclera The spaces between the lamellae are lined by endothelium, and open freely into the perichoroidal lymph space, which, in its turn, communicates with the periscleral space by the perforations in the sclera through which the vessels and nerves are transmitted. lamina fusca sclerae lamina fusca scletae fusca sclerae suprachoroid lamina of sclera lamina fusca of sclera Wikipedia:Suprachoroid_lamina lamina suprachorioidea lamina suprachorioidea neural crest-derived structure blood vessel layer of choroid