Status: retired, Not sufficiently defined by necessary conditions definition status. Date: 31-Jul 2003. Module: SNOMED CT core module
Descriptions:
| Id | Description | Lang | Type | Status | Case? | Module | 
| 125212018 | Day blindness | en | Synonym | Active | Entire term case insensitive | SNOMED CT core module | 
| 125213011 | Hemeralopia | en | Synonym | Active | Entire term case insensitive | SNOMED CT core module | 
| 503005019 | Difficulty seeing at night | en | Synonym | Active | Entire term case insensitive | SNOMED CT core module | 
| 503006018 | Night blindness | en | Synonym | Active | Entire term case insensitive | SNOMED CT core module | 
| 503007010 | Nyctalopia | en | Synonym | Active | Entire term case insensitive | SNOMED CT core module | 
| 815993013 | Day blindness (disorder) | en | Fully specified name | Active | Entire term case insensitive | SNOMED CT core module | 
| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Day blindness | Is a | Disorder of posterior segment of eye | false | Inferred relationship | Existential restriction modifier | ||
| Day blindness | Is a | Weak vision | false | Inferred relationship | Existential restriction modifier | ||
| Day blindness | Is a | Vision problem | false | Inferred relationship | Existential restriction modifier | ||
| Day blindness | Finding site | Retinal structure | false | Inferred relationship | Existential restriction modifier | 
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Oguchi's disease | Is a | False | Day blindness | Inferred relationship | Existential restriction modifier | |
| Abnormal rod or cone threshold | Is a | False | Day blindness | Inferred relationship | Existential restriction modifier | |
| Delayed rod or cone adaption | Is a | False | Day blindness | Inferred relationship | Existential restriction modifier | |
| Unspecified night blindness | Is a | False | Day blindness | Inferred relationship | Existential restriction modifier | |
| Hereditary night blindness NOS | Is a | False | Day blindness | Inferred relationship | Existential restriction modifier | |
| Congenital night blindness NOS | Is a | False | Day blindness | Inferred relationship | Existential restriction modifier | |
| Abnormal dark adaptive curve NOS | Is a | False | Day blindness | Inferred relationship | Existential restriction modifier | |
| Night blindness NOS | Is a | False | Day blindness | Inferred relationship | Existential restriction modifier | 
This concept is not in any reference sets