FQL is a query language that allows you to retrieve, filter and project data from any data source containing FHIR Resources. It brings the power of three existing languages together: SQL, JSON and FhirPath. It allows you to create tables and is useful for gaining insight and perform quality control.
To install the command line tool, download Firely Terminal
For using npm with FHIR packages, read more here
The EssiLux Core Implementation Guide is based on FHIR Version R4 and defines the conformance requirements for accessing EssiLux clinical data.
Project EssiLux - Eyecare