Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT core
Descriptions:
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Acute hydrops keratoconus | Is a | True | Keratoconus | Inferred relationship | Some | |
| Posterior keratoconus | Is a | True | Keratoconus | Inferred relationship | Some | |
| Congenital keratoconus | Is a | True | Keratoconus | Inferred relationship | Some | |
| Stable condition keratoconus | Is a | False | Keratoconus | Inferred relationship | Some | |
| Keratoconus, stable condition | Is a | True | Keratoconus | Inferred relationship | Some | |
| Unspecified keratoconus | Is a | False | Keratoconus | Inferred relationship | Some | |
| Keratoconus NOS | Is a | False | Keratoconus | Inferred relationship | Some | |
| Unstable keratoconus | Is a | True | Keratoconus | Inferred relationship | Some | |
| Keratoconus of left cornea | Is a | True | Keratoconus | Inferred relationship | Some | |
| Keratoconus of right cornea (disorder) | Is a | True | Keratoconus | Inferred relationship | Some | 
Reference Sets
Dutch optometric diagnoses simple reference set (foundation metadata concept)
Dutch pathology simple reference set (foundation metadata concept)