| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Scleral plug, reusable | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Orbital depressor | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Fresnel lens | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal resection holder | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Vitrectomy fluid/gas handling instrument | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic electrosurgical diathermy system, line-powered | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye speculum, single-use | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ocular marker | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Pneumatic trabeculoplasty system suction ring | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye spatula, reusable | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmodiaphanoscope | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Hand-held campimeter | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal probe, single-use | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Iris retractor, reusable | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic anesthesia needle | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Intense pulsed light dry eye therapy unit | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Intraocular pressure-reducing system | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Medical device integration rack | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Perfluoropropane cylinder | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Vitrectomy system handpiece tip | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ultrasonic pachymeter | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye speculum, reusable | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Tachistoscope | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Retinoscope, battery-powered | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic clip | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Vitrectomy sutureless lens connecting band | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Vitreoretinal gas injection set | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic microscope | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Intraocular lens-insertion cartridge | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic ultrasound imaging system transducer | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic flash generator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal punctum plug | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Electronic occlusion spectacles | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Tear osmolarity electrode | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Tear osmolarity meter | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal marker handpiece | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal marker handpiece tip | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ptosis sling | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ocular monitoring/recording system patient-worn antenna, reusable | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Implantable intraocular pressure monitoring system | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ocular volume ambulatory recording system software | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Implantable intraocular pressure monitoring system sensor | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ocular volume ambulatory recording system recorder | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Diabetic retinopathy phototherapy mask | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Implantable intraocular pressure monitoring system monitor | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Implantable intraocular pressure monitoring system sensor insertion cartridge | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ocular monitoring/recording system ambulatory antenna, single-use | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Implantable intraocular pressure monitoring system sensor injector | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic electrosurgical probe | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Transocular electrical stimulation system control unit | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Transocular electrical stimulation system electrode | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Retinal prosthesis implant guide | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Photodiode subretinal prosthesis system control unit | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Photodiode subretinal prosthesis system transdermal coil | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eyelid heat therapy system applicator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Intranasal lacrimal neurostimulator electrode | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Intranasal lacrimal neurostimulator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic examination station | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Glaucoma therapy ultrasound system generator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Glaucoma therapy ultrasound system handpiece | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Hand-held ophthalmic ultraviolet phototherapy unit | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Intraocular lens implantation cord | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eyelid thermal pulsation system cable/tubing | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Vitreous body prosthesis inserter | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Video-camera tongue electrical stimulation system | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic needle, reusable | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Meibomian gland expressor and evaluator, manual | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic surgery fluid retention ring | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Glaucoma micro-stent | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Lens nucleus manipulator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eyeball fixation instrument | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye and eyelid movement monitoring spectacles | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eyelid massager | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye tracking brain injury assessment device | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Scleral plug | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic needle | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal dilator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal probe | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye spatula | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Patient worn ocular monitoring and recording antenna | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal trephine | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Multiple ocular dimension meter | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Scleral buckling with vitreous implant | Direct device | True | Ophthalmological device | Inferred relationship | Existential restriction modifier | 1 | 
| Scleral buckling with implant | Direct device | True | Ophthalmological device | Inferred relationship | Existential restriction modifier | 1 | 
| Ophthalmic injector illuminating catheter | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Removal of explant from sclera | Direct device | True | Ophthalmological device | Inferred relationship | Existential restriction modifier | 1 | 
| Ocular tissue elasticity analyzer | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Scleral reinforcement surgery balloon catheter | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  |