{

"resourceType": "DeviceRequest",
"id": "left-lens",
"identifier": [
  {
    "system": "http://www.happysight.com/prescription",
    "value": "15013L"
  }
],
"groupIdentifier": {
  "system": "http://acme.org",
  "value": "15013"
},
"status": "completed",
"intent": "original-order",
"codeCodeableConcept": {
  "coding": [
    {
      "system": "http://terminology.hl7.org/CodeSystem/ex-visionprescriptionproduct",
      "code": "lens"
    }
  ]
},
"parameter": [
  {
    "code": {
      "coding": [
        {
          "system": "http://loinc.org",
          "code": "28842-3",
          "display": "Sphere distance Glasses prescription.lens - left"
        }
      ],
      "text": "sphere, left lens"
    },
    "valueQuantity": {
      "value": -1.0,
      "unit": "Diopter",
      "system": "http://unitsofmeasure.org",
      "code": "[diop]"
    }
  },
  {
    "code": {
      "coding": [
        {
          "system": "http://loinc.org",
          "code": "28843-1",
          "display": "Cylinder base distance Glasses prescription.lens - left"
        }
      ],
      "text": "cylinder, left lens"
    },
    "valueQuantity": {
      "value": -0.5,
      "unit": "Diopter",
      "system": "http://unitsofmeasure.org",
      "code": "[diop]"
    }
  },
  {
    "code": {
      "coding": [
        {
          "system": "http://loinc.org",
          "code": "28844-9",
          "display": " Axis distance Glasses prescription.lens - left"
        }
      ],
      "text": "axis, left lens"
    },
    "valueQuantity": {
      "value": 180,
      "unit": "Degrees",
      "system": "http://unitsofmeasure.org",
      "code": "deg"
    }
  }
],
"subject": {
  "reference": "Patient/example"
},
"occurrenceDateTime": "2014-06-15",
"requester": {
  "reference": "Practitioner/example"
},
"meta": {
  "tag": [
    {
      "system": "http://terminology.hl7.org/CodeSystem/v3-ActReason",
      "code": "HTEST",
      "display": "test health data"
    }
  ]
}

}