| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Nystagmus inducing optokinetic drum | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Fluorescein strip | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Retinal prosthesis system camera spectacles | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal trephine handle | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Electrooculograph | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic cannula | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Instrument warmer | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye-surface lavage system | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Binocular vision test unit | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Retinal prosthesis system radio-frequency coil | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic insufflator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal bur handpiece, battery-powered | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Retinoscope, line-powered | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Optical low coherence reflectometry (OLCR) biometer | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Multi-purpose digital medical camera lens, intraocular, visible/infrared light | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic cannulation set, single-use | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic cryosurgical system | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Iris retractor, single-use | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye muscle sleeve | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Prism bar | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye muscle clamp | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic cryosurgical system control unit | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Posterior eye segment analysis system application software | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic caliper | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal sac retractor, self-retaining | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic forceps | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal trephine, reusable | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Trabeculotome | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic electrosurgical diathermy system, battery-powered | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Vitrectomy system micro-cutting unit | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Phacoemulsification system handpiece | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Phorometer | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic applicator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Vitrectomy system generator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Haidinger brush imager | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Phacoemulsification system handpiece tip, reusable | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Retinal tack | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal topography system application software | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Synoptophor, line-powered | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Intraocular gas cylinder regulator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Multi-purpose digital medical camera lens, intraocular, fluorescent angiography | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmoleukoscope | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Optomyometer | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Dynamic visual acuity testing system | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic chair, manual | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic refractometer | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eyelid clamp | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal bur handpiece, line-powered | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Sulfur hexafluoride cylinder | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic sponge | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal tube | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic light source | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Scotometer | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Phacoemulsification system generator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Anterior eye segment analysis system application software | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal dilator, single-use | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic surgical procedure kit | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Orbital retractor | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eyelid thermal pulsation system applicator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic fiberoptic light instrument, reusable | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Spectral-domain optical coherence tomography system | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye spatula, single-use | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic surgical instrument handle quick lock adaptor | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Phacoemulsification/vitrectomy system generator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Color discrimination tester, quick-test | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal bur system, line-powered | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye cup | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic ultraviolet phototherapy system | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic hook | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ocular neuromodulator | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Lens loop | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ocular occluder | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Vitrectomy sutureless lens holding ring | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic head reflector | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal intubation set | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal topography system | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Slit lamp control unit | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Nystagmus inducing tape | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Gonioscope | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Reverse-image mirror | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye retractor | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Goggles | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eikonometer | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic irrigation/aspiration pump | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Optical pachymeter | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic distometer | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Entoptoscope | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Retinal optical coherence tomography system | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Color discrimination tester | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic camera | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Intraocular pressure-reducing ball | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Ophthalmic fiberoptic light instrument, single-use | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Spectacle lens occluder | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Visual acuity projector | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Eye magnet, non-powered | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Trabeculotomy probe | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal trephine manual instrument | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal light shield | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Moisture chamber spectacles | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Corneal bur | Is a | True | Ophthalmological device | Inferred relationship | Existential restriction modifier |  | 
| Scleral plug, reusable | Is a | False | Ophthalmological device | Inferred relationship | Existential restriction modifier |  |