Version 2.77

Term Description

Axis measurement increment is the specificity to which a keratometer can measure the axis, typically 1 or 5 degrees. For example, a 5 degree increment allows measurement of 5, 10, 15 degrees, etc., while a 1 degree increment allows finer measurement to a single degree.
Source: Regenstrief LOINC

Part Descriptions

LP418605-4   Axis measurement increment
Axis measurement increment is the specificity to which a ophthalmologic device can measure the axis, typically 1 or 5 degrees. For example, a 5 degree increment allows measurement of 5, 10, 15 degrees, etc., while a 1 degree increment allows finer measurement to a single degree. Source: Regenstrief LOINC

LP418239-2   Axis eye
The axis is the orientation of the placement of the cylinder for astigmatism correction. The axis can be anywhere from 1 to 180 degrees. Source: Regenstrief LOINC

Fully-Specified Name

Component
Axis measurement increment
Property
Type
Time
Pt
System
Keratometer
Scale
Nom
Method

Additional Names

Short Name
Axis step KM

Example Answer List: LL5576-5

Source: Japan Ophthalmic Instruments Association
Answer Code Score Answer ID
1 degree LA31063-3
5 degrees LA31064-1

Basic Attributes

Class
EYE.REFRACTION
Type
Clinical
First Released
Version 2.68
Last Updated
Version 2.68
Order vs. Observation
Observation

Member of these Panels

LOINC Long Common Name
95298-6 Keratometry panel

Language Variants Get Info

Tag Language Translation
es-MX Spanish (Mexico) Incremento de la medición del eje:Tipo:Punto temporal:Queratómetro:Nominal:
it-IT Italian (Italy) Assi, incremento della misura:Tipo:Pt:Oftalmometro:Nom:
Synonyms: Cheratometro Incremento della misura delle assi Occhio Oftalmologia - rifrazione Punto nel tempo (episodio)
zh-CN Chinese (China) 轴向测量增量:类型:时间点:角膜曲率计:名义型:
Synonyms: Refraction measurements;屈光度指标;屈光度测量指标;眼.屈光度指标;眼.屈光度测量指标;眼科.屈光度指标;眼科.屈光度测量指标;眼科学与视力测定变量.屈光度指标;眼科学与验光变量.屈光度指标;眼科学与验光变量.屈光度测量指标;眼科学与验光指标.屈光度指标;眼科学与验光指标.屈光度测量指标 分类型应答;分类型结果;名义性;名称型;名词型;名词性;标称性;没有自然次序的名义型或分类型应答 型 时刻;随机;随意;瞬间 眼;眼睛;眼科;眼科学与验光变量;眼科学与验光指标 角膜散光计;角膜计;角膜弧度仪 轴向（散光轴向、散光方向、眼轴、视轴、轴位）测量（检测、测定）增量（步长）

Example Units

Unit Source
deg Example UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=95300-0