{
  "resourceType": "ActivityDefinition",
  "id": "saccadic-eye-movements",
  "url": "https://bodyiq.dev/fhir/ActivityDefinition/saccadic-eye-movements",
  "version": "1",
  "name": "SaccadicEyeMovements",
  "title": "Saccadic Eye Movements",
  "status": "draft",
  "experimental": true,
  "description": "Refixate the eyes rapidly between two near targets held ~2 ft apart, 1–2 ft from the face. Horizontal pairs first, then vertical. Aim for quick, symmetric, accurate jumps without overshooting.",
  "useContext": [
    {
      "code": {
        "system": "http://terminology.hl7.org/CodeSystem/usage-context-type",
        "code": "user"
      },
      "valueCodeableConcept": {
        "text": "difficulty: beginner"
      }
    }
  ],
  "topic": [
    {
      "coding": [
        {
          "system": "https://bodyiq.dev/fhir/CodeSystem/exercise",
          "code": "saccadic-eye-movements",
          "display": "Saccadic Eye Movements"
        }
      ]
    }
  ],
  "kind": "ServiceRequest",
  "dosage": [
    {
      "text": "10–20 refixations × 2–3 sets per direction, daily."
    }
  ],
  "usage": "Evidence: limited.",
  "note": [
    {
      "text": "Move only the eyes, keep the head still"
    },
    {
      "text": "Eyes should land on the target — no drift, no overshoot"
    },
    {
      "text": "If symptoms appear (nausea, fog), pause and rest before continuing"
    }
  ]
}