{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://openvisual.org/schema/photopsia/1.0",
  "title": "OVS: Photopsia",
  "description": "Spontaneous flashes of light with no external stimulus. Common in VSS, PVD, and migraine prodrome.",
  "allOf": [
    { "$ref": "https://openvisual.org/schema/symptom-base/1.0" },
    {
      "type": "object",
      "properties": {
        "ovs_type": { "const": "ovs:photopsia" }
      }
    }
  ]
}