The refraction measurement is a measurement with which the refractive error of the eye is determined. During the refraction measurement, the necessary correction is established: the spherical power (in diopter), the cylindrical power (in diopter), the axis direction(in degrees) for any cylindrical correction, the prism (in diopter)and any additional power of the reading area (in diopter), the so-called reading addition
Purpose
The purpose of a refraction measurement is to determine the correction (through glasses or lenses) with which the patient can see optimally.
Patient Population
Adults and children from the age that they can interpret a picture chart.
Information Model
Type
Id
Concept
Card.
Definition
DefinitionCode
Reference
NL-CM:12.20.1
Refraction
Root concept of the Refractie information model.This root concept contains all data elements of the Refraction information model.
Container of the CilindricalRefraction concept.This container contains all data elements of the CilindricalRefraction concept.
NL-CM:12.20.11
CylindricalRefractionValue
1
The power of the cylinder needed to correct the cylindrical error (astigmatism), expressed in diopters. When a cylindrical refraction is registered, the axis of the cylinder must also be specified.
Container of the SfericRefraction concept.This container contains all data elements of the SfericRefraction concept.
NL-CM:12.20.9
SfericRefractionValue
1
The spherical spectacle strength power needed to correct nearsightedness (myopia) or farsightedness (hyperopia), expressed in diopters, ascending by 0.25D.
The spherical power added to half of the cylindrical power. Expressed in diopters, ascending by 0.1D. Some equipment automatically calculates the spherical equivalent automatically.
NL-CM:12.20.8
ReadAddition
0..1
A supplement that is added to the refraction value to determine the strength of the reading glasses, expressed in diopters.
Technical specifications in HL7v3 CDA and HL7 FHIR
To exchange information based on health and care information models, additional, more technical specifications are required.
Not every environment can handle the same technical specifications. For this reason, there are several types of technical specifications:
HL7® version 3 CDA compatible specifications, available through the Nictiz ART-DECOR® environment
HL7® FHIR® compatible specifications, available through the Nictiz environment on the Simplifier FHIR