Stereoscopic comparator. Wtih primary use for optic discs.
D005069:Evaluation Studies as Topic; D005901:Glaucoma / Q000175:diagnosis; D006801:Humans; D009898:Optic Disk / Q000033:anatomy & histology; D010780:Photogrammetry / Q000295:instrumentation*; D010781:Photography / Q000295:instrumentation*