| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Light source adaptor | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Patient positioning patterned-light instrument | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Radiographic film view box, non-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Operating/examination/treatment light handle cover, reusable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Operating/examination/treatment light handle cover, single-use | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Operating/examination/treatment light mount, fixed | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Operating/examination/treatment light mount, mobile | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Ophthalmic light source | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Clinical refractometer | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Densoscope | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Dermatoscope, optical | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Endoscope-light transformer | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Endoscopic light source, battery-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Endoscopic light source, line-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Endoscopic light source/processing unit | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic light cable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fiberoptic suction tip, reusable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic suction tip, single-use | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Intubation light source | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Laryngoscope blade, reusable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Laryngoscope blade, single-use | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Laryngoscope handle, reusable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Laryngoscope handle, single-use | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Laryngostroboscope system | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Light/light system | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Assistive illumination-control device | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Laryngostroboscope | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic ureteral catheter, reusable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic ureteral catheter, single-use | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Loupe | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Surgical binoculars, reusable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Basic light microscope | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Ophthalmic microscope | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Visual paging system | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Slit lamp | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Patient-service utility supply system | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Wheelchair lights | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Euthyscope, battery-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Euthyscope, line-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic gastro-urological endotherapy biopsy forceps, reusable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic retractor handle | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic ophthalmic irrigation/aspiration cannula, single-use | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Surgical binoculars, single-use | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Inverted-stage light microscope | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Transanal endoscopic microsurgery /transanal endoscopic operations rectoscope, video | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Video-imaging ophthalmic diode-pumped solid-state laser system | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Ophthalmic/otologic diagnostic set | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Ear, nose and throat diagnostic set | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic ophthalmic hook | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic ophthalmic irrigation/aspiration cannula, reusable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic gastro-urological endotherapy biopsy forceps, single-use | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic gastro-urological endotherapy biopsy forceps, reprocessed | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Direct ophthalmoscope, battery-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Direct ophthalmoscope, line-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Indirect monocular ophthalmoscope, battery-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Indirect monocular ophthalmoscope, line-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Indirect binocular ophthalmoscope, battery-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Indirect binocular ophthalmoscope, line-powered | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic vaginal speculum | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Sinus-illumination light guide cable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Rigid intubation laryngoscope | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Flexible-end laryngoscope blade | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Outer ear otoscope | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Medical-imaging cine projector | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Ultraviolet germicidal light radiometer | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Surgical instrument fibre optic light | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Ophthalmic fibre optic light instrument, single-use | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Fibre optic gastro-urological retractor | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Ophthalmic fibre optic light instrument, reusable | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Surgical irrigation/aspiration tip, fibre optic-illuminated | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Blanket/pad infant phototherapy unit tester | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| General physical examination set | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Laryngoscope light-emitting cell | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  | 
| Dental delivery system, stationary | Is a | False | Device associated with lights/light systems | Inferred relationship | Some |  |