| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Prescription of spectacles (procedure) | Direct device | False | Eye glasses, device (physical object) | Inferred relationship | Some | 1 | 
| Provision of telescopic spectacles | Direct device | False | Eye glasses, device (physical object) | Inferred relationship | Some | 2 | 
| Applying dark glasses | Direct device | True | Eye glasses, device (physical object) | Inferred relationship | Some | 1 | 
| Provision of headband telescope | Direct device | False | Eye glasses, device (physical object) | Inferred relationship | Some | 2 | 
| Repair and refitting spectacles | Direct device | False | Eye glasses, device (physical object) | Inferred relationship | Some | 1 | 
| Supply of spectacles | Direct device | True | Eye glasses, device (physical object) | Inferred relationship | Some | 1 | 
| Mechanical repair and refitting of spectacles for aphakia | Direct device | False | Eye glasses, device (physical object) | Inferred relationship | Some | 1 | 
| Mechanical repair and refitting of spectacles for aphakia | Direct device | False | Eye glasses, device (physical object) | Inferred relationship | Some | 2 | 
| Repair and refitting spectacles | Direct device | True | Eye glasses, device (physical object) | Inferred relationship | Some | 2 | 
| Dispensing of spectacles (procedure) | Direct device | True | Eye glasses, device (physical object) | Inferred relationship | Some | 1 | 
| Fitting of spectacles (procedure) | Direct device | True | Eye glasses, device (physical object) | Inferred relationship | Some | 1 | 
| Prescription of spectacles (procedure) | Direct device | True | Eye glasses, device (physical object) | Inferred relationship | Some | 1 | 
| Magnifying spectacles (physical object) | Is a | True | Eye glasses, device (physical object) | Inferred relationship | Some |  | 
| Recumbent spectacles (physical object) | Is a | True | Eye glasses, device (physical object) | Inferred relationship | Some |  | 
| Repair and refitting spectacles | Direct device | True | Eye glasses, device (physical object) | Inferred relationship | Some | 3 | 
| Provision of headband telescope | Direct device | False | Eye glasses, device (physical object) | Inferred relationship | Some | 3 | 
| Spectacle telescope | Is a | True | Eye glasses, device (physical object) | Inferred relationship | Some |  | 
| Fitting and dispensing of spectacles | Direct device | True | Eye glasses, device (physical object) | Inferred relationship | Some | 2 | 
| Mirror-prism spectacles | Is a | True | Eye glasses, device (physical object) | Inferred relationship | Some |  | 
| Change of prescription of spectacles (procedure) | Direct device | True | Eye glasses, device (physical object) | Inferred relationship | Some | 1 | 
| Subjective refractometry spectacles | Is a | True | Eye glasses, device (physical object) | Inferred relationship | Some |  |