| parent | EKG.IMP | LP7794-3 |
| child | Axis | Heart | Impression | LP406875-7 |
| parent | EYE.CONTACT_LENS | LP29673-8 |
| child | Axis | Left contact lens | Contact lens | LP408342-6 |
| child | Axis | Left contact lens prescription | Contact lens | LP408343-4 |
| child | Axis | Right contact lens prescription | Contact lens | LP408344-2 |
| child | Axis | Right contact lens | Contact lens | LP408345-9 |
| parent | EYE.REFRACTION | LP29677-9 |
| child | Axis | Left cornea | Refraction | LP418838-1 |
| child | Axis | Right cornea | Refraction | LP418839-9 |
| child | Axis | Left eye | Refraction | LP408711-2 |
| child | Axis | Right eye | Refraction | LP408712-0 |
| parent | EYE.LENSOMETRY | LP418652-6 |
| child | Axis | Corrective lens | Lensometry | LP419220-1 |
| child | Axis | Left corrective lens | Lensometry | LP419221-9 |
| child | Axis | Right corrective lens | Lensometry | LP419222-7 |
| PartDisplayName | en-US | Axis |
| DisplayName | en-US | Axis |
LOINC Version: 2.77
FHIR