Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2006. Module: SNOMED CT core
Descriptions:
| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| 20 feet | Is a | Vision test distance (finding) | true | Inferred relationship | Some | ||
| 20 feet | Finding site | Structure of visual system (body structure) | true | Inferred relationship | Some | 2 | |
| 20 feet | Interprets | Visual acuity | true | Inferred relationship | Some | 1 | 
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
This concept is not in any reference sets