title: A chin rest for the slit-lamp operator.
mesh_terms: D005547:Foreign Bodies / Q000628:therapy; D006068:Gonioscopy / Q000295:instrumentation; D006801:Humans; D008853:Microscopy / Q000295:instrumentation*; D019721:Ophthalmoscopes; D014065:Tonometry, Ocular / Q000295:instrumentation