obsolete_ganglion cell inner plexiform layer thickness measurement true http://purl.obolibrary.org/obo/OBA_2100044 PMID:33979322 Project to replace EFO measurement branch with enriched OBA branch. Please use: OBA:2100044 3.74.0 A measure of the thickness of the ganglion cell inner plexiform layer (GCIPL). It is typically measured using optical imaging methods such as optical coherence tomography (OCT). The thickness of the ganglion cell complex (GCC), the collective name for the retinal nerve fibre layer and the ganglion cell inner plexiform layer, is one of the biomarkers used in the diagnosis of primary open angle glaucoma (POAG). GCIPL thickness measurement Annalisa Buniello