{
  "created": "2026-10-24",
  "notice": "Original VisualSim illustrations are not study figures, diagnostic tests or patient recordings. Clinical sources are linked in each guide.",
  "illustrations": [
    {
      "file": "visual-snow-syndrome-1.svg",
      "title": "Fine static",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/visual-snow-syndrome.html#sources",
      "clinicalSource": "https://ichd-3.org/appendix/a1-migraine/a1-4-complications-of-migraine/a1-4-6-visual-snow/",
      "sha256": "74d54d08bfbd47e931626a35c18cd32626e0f17bb000ad6a78c7d576a17e262d"
    },
    {
      "file": "visual-snow-syndrome-2.svg",
      "title": "Translucent flecks",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/visual-snow-syndrome.html#sources",
      "clinicalSource": "https://ichd-3.org/appendix/a1-migraine/a1-4-complications-of-migraine/a1-4-6-visual-snow/",
      "sha256": "f92a4429684cf5a7df60d130722de2425bdb19e9410eabbf1ad9f972829b2568"
    },
    {
      "file": "visual-snow-syndrome-3.svg",
      "title": "Static with light bloom",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/visual-snow-syndrome.html#sources",
      "clinicalSource": "https://ichd-3.org/appendix/a1-migraine/a1-4-complications-of-migraine/a1-4-6-visual-snow/",
      "sha256": "bd52925ed7c143590f59961668a060aa0a5d0cb8da096090010ff9f026df5631"
    },
    {
      "file": "migraine-aura-1.svg",
      "title": "A small arc",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/migraine-aura.html#sources",
      "clinicalSource": "https://ichd-3.org/1-migraine/1-2-migraine-with-aura/",
      "sha256": "b074437a824de88302c5cc1bedbf43bc9913477f661bb25d1203d3ca9ebee06e"
    },
    {
      "file": "migraine-aura-2.svg",
      "title": "An expanding pattern",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/migraine-aura.html#sources",
      "clinicalSource": "https://ichd-3.org/1-migraine/1-2-migraine-with-aura/",
      "sha256": "393001566344a1c869881500dbaf88e9d8d4c1815fee69c29a84ed1840c0e84e"
    },
    {
      "file": "migraine-aura-3.svg",
      "title": "A wider arc",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/migraine-aura.html#sources",
      "clinicalSource": "https://ichd-3.org/1-migraine/1-2-migraine-with-aura/",
      "sha256": "7c3a839da104885c4c1d981387fbb4844fd1d24bcf10e3bc4ba6c4301e1e6a03"
    },
    {
      "file": "hppd-1.svg",
      "title": "Static",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/hppd.html#sources",
      "clinicalSource": "https://pmc.ncbi.nlm.nih.gov/articles/PMC5870365/",
      "sha256": "e059fa09c29b3e1c1915f8a4763300ac9284ab35d4c10f21803a484da6a27358"
    },
    {
      "file": "hppd-2.svg",
      "title": "Surface movement",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/hppd.html#sources",
      "clinicalSource": "https://pmc.ncbi.nlm.nih.gov/articles/PMC5870365/",
      "sha256": "0d714a1e01472e54a41a3faad4a9c528ce43791f482226fb780241f78a939a02"
    },
    {
      "file": "hppd-3.svg",
      "title": "Trailing",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/hppd.html#sources",
      "clinicalSource": "https://pmc.ncbi.nlm.nih.gov/articles/PMC5870365/",
      "sha256": "ff68d30a1f70a3676cafa8ed6c35185494198cf0522f818095ada9ae898a9bb5"
    },
    {
      "file": "posterior-vitreous-detachment-1.svg",
      "title": "Drifting specks",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/posterior-vitreous-detachment.html#sources",
      "clinicalSource": "https://www.asrs.org/patients/retinal-diseases/9/posterior-vitreous-detachment",
      "sha256": "e4177aec73230300e82b8584200acf69aa83ef92422d512bfa23d6e116f8763c"
    },
    {
      "file": "posterior-vitreous-detachment-2.svg",
      "title": "Threads or cobwebs",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/posterior-vitreous-detachment.html#sources",
      "clinicalSource": "https://www.asrs.org/patients/retinal-diseases/9/posterior-vitreous-detachment",
      "sha256": "29f599a6d6b82e70b7b79d993828b59cbef3651a5542f01da47a1bafd282af3f"
    },
    {
      "file": "posterior-vitreous-detachment-3.svg",
      "title": "A ring-shaped floater",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/posterior-vitreous-detachment.html#sources",
      "clinicalSource": "https://www.asrs.org/patients/retinal-diseases/9/posterior-vitreous-detachment",
      "sha256": "a141d155e18855b0503c8e26b9a374c26de3a1821f83d2e1b387d92d66ca82ec"
    },
    {
      "file": "age-related-macular-degeneration-1.svg",
      "title": "Central softening",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/age-related-macular-degeneration.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/age-related-macular-degeneration",
      "sha256": "4f1582e3c40d9c7fc608c02f1670ef7c014699076cecb2d8d410b727d0db8dce"
    },
    {
      "file": "age-related-macular-degeneration-2.svg",
      "title": "Distorted lines",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/age-related-macular-degeneration.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/age-related-macular-degeneration",
      "sha256": "ac715859ea2a140145016da2846b292a09e6f0ca8c16eb47677ce984e840bec7"
    },
    {
      "file": "age-related-macular-degeneration-3.svg",
      "title": "Off-center difficulty",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/age-related-macular-degeneration.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/age-related-macular-degeneration",
      "sha256": "8d6879b21852e1fdc0496ca9d5d45dec03f3db3e5020f74a41b61fd5f994831a"
    },
    {
      "file": "glaucoma-1.svg",
      "title": "Unchanged appearance",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/glaucoma.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/glaucoma",
      "sha256": "214a6a5fa2b8c3989561f971a8021a21f4af305b1540120ecc7ee886e01d1e2b"
    },
    {
      "file": "glaucoma-2.svg",
      "title": "Peripheral softening",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/glaucoma.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/glaucoma",
      "sha256": "5b0e73c3a3509a99afef23ee5a0128d6fd3c470a3c3b6576294b94a1656579f9"
    },
    {
      "file": "glaucoma-3.svg",
      "title": "Missing detail",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/glaucoma.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/glaucoma",
      "sha256": "010c5c3cb0d6b9c7a06f4a8d1ac6aee41708df78406c7a3f29334a256f60cc95"
    },
    {
      "file": "cataract-1.svg",
      "title": "Cloudiness",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/cataract.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/cataracts",
      "sha256": "85e2e11e8a7ffb2fa9889dbe2cba1ad1b88065b41dcf19645c1685953f95df7e"
    },
    {
      "file": "cataract-2.svg",
      "title": "Light scatter",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/cataract.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/cataracts",
      "sha256": "1df143bf7e143caf1f334f505022d8caa503eccf45a5b78877bdeaf47a4cb237"
    },
    {
      "file": "cataract-3.svg",
      "title": "Color change",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/cataract.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/cataracts",
      "sha256": "4d55c0ef539b3d04bddd1d6ac175efc1b7819da866289ebfdf345b3fb3459afc"
    },
    {
      "file": "retinitis-pigmentosa-1.svg",
      "title": "Dim-light difficulty",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/retinitis-pigmentosa.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/retinitis-pigmentosa",
      "sha256": "337822ac76af0c6d776a43799182768028fb257cb9ba062b35508bba3973a12c"
    },
    {
      "file": "retinitis-pigmentosa-2.svg",
      "title": "Peripheral difficulty",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/retinitis-pigmentosa.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/retinitis-pigmentosa",
      "sha256": "e04092428bb67fd411e6220031df4dca0451050d103887aa5066461bc5c29a82"
    },
    {
      "file": "retinitis-pigmentosa-3.svg",
      "title": "Both together",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/retinitis-pigmentosa.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/retinitis-pigmentosa",
      "sha256": "fd9513cb965bde706e9b1a0d9ac021df9b7909319d38ae5a7be1bcd12fd1e58d"
    },
    {
      "file": "charles-bonnet-syndrome-1.svg",
      "title": "Patterns",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/charles-bonnet-syndrome.html#sources",
      "clinicalSource": "https://www.rnib.org.uk/your-eyes/eye-conditions-az/charles-bonnet-syndrome/",
      "sha256": "0170278e8422771328c7ea4c79d194b51e77fe1c968537f7d18aa05f133a33b4"
    },
    {
      "file": "charles-bonnet-syndrome-2.svg",
      "title": "Colorful shapes",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/charles-bonnet-syndrome.html#sources",
      "clinicalSource": "https://www.rnib.org.uk/your-eyes/eye-conditions-az/charles-bonnet-syndrome/",
      "sha256": "49062c5aeb570bc7aba6c881f267ab660e935ac7bd40f658ad7d3c6ab5813869"
    },
    {
      "file": "charles-bonnet-syndrome-3.svg",
      "title": "People or figures",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/charles-bonnet-syndrome.html#sources",
      "clinicalSource": "https://www.rnib.org.uk/your-eyes/eye-conditions-az/charles-bonnet-syndrome/",
      "sha256": "4871ab9580d199e0887e63842df0b2dec40c2d243276456e6fa5e064e6fb7400"
    },
    {
      "file": "hemianopia-1.svg",
      "title": "Right side affected",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/hemianopia.html#sources",
      "clinicalSource": "https://www.nanosweb.org/homonymoushemianopia/",
      "sha256": "695940d054ce10d9c04bb9d17ec887dc0b611e682e3bf13cce1553d062ccd1af"
    },
    {
      "file": "hemianopia-2.svg",
      "title": "Left side affected",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/hemianopia.html#sources",
      "clinicalSource": "https://www.nanosweb.org/homonymoushemianopia/",
      "sha256": "7845078a23043c4c5dc3e9b388b89b664ce0c3b9f4b468840e9a4cebcf283b0e"
    },
    {
      "file": "hemianopia-3.svg",
      "title": "Central sparing",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/hemianopia.html#sources",
      "clinicalSource": "https://www.nanosweb.org/homonymoushemianopia/",
      "sha256": "3e7fb03c0d0543208f5259ea50a4989dcb421abffa17a1a5e44a09b62ddec45f"
    },
    {
      "file": "floaters-1.svg",
      "title": "Small specks",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/floaters.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/floaters",
      "sha256": "beecc3036b32aeb577a9520f0f8e3bff7c6cce7a34c5a3a9f3e90fd20625b4f4"
    },
    {
      "file": "floaters-2.svg",
      "title": "Threads",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/floaters.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/floaters",
      "sha256": "2c9344a927fc786d50fc63727060b5d24681619ee450b3e9f50e5f4eca607d04"
    },
    {
      "file": "floaters-3.svg",
      "title": "Cobwebs or rings",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/floaters.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/floaters",
      "sha256": "d9adb0c255b8d6bd81a45ec6d31375baad1e56c1cd5d4921472f5fa2a5f873d7"
    },
    {
      "file": "palinopsia-1.svg",
      "title": "Shorter trailing",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/palinopsia.html#sources",
      "clinicalSource": "https://my.clevelandclinic.org/health/symptoms/palinopsia",
      "sha256": "25c51d42379655d26a3beeb294828136930c277d5e27311d3340a6a03fbe88f3"
    },
    {
      "file": "palinopsia-2.svg",
      "title": "Longer trailing",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/palinopsia.html#sources",
      "clinicalSource": "https://my.clevelandclinic.org/health/symptoms/palinopsia",
      "sha256": "cb0a61e18a6b9101100f9d95460596a71fbf3de3139479d7aadfeafe847d38f7"
    },
    {
      "file": "palinopsia-3.svg",
      "title": "Bright-object persistence",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/palinopsia.html#sources",
      "clinicalSource": "https://my.clevelandclinic.org/health/symptoms/palinopsia",
      "sha256": "dd60d6aa47b71540fb3968b686a0983b7bc2ac5009e3cf85b892634ae748545b"
    },
    {
      "file": "color-blindness-1.svg",
      "title": "Protan-type approximation",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/color-blindness.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/color-blindness",
      "sha256": "403d8d114235c9fb70ea3d412ba7ba267ce8a9f52311d86c2eda0e0e3ee95bb0"
    },
    {
      "file": "color-blindness-2.svg",
      "title": "Deutan-type approximation",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/color-blindness.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/color-blindness",
      "sha256": "8e03ba9c693ef23bd66c9ad99f740d4d7bc0bd686c32f329cc035e942cb1b3bb"
    },
    {
      "file": "color-blindness-3.svg",
      "title": "Tritan-type approximation",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/color-blindness.html#sources",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/color-blindness",
      "sha256": "abb0f6ea22890e1e30f4a0106a2cd62ab3bf9e410b128afca3a3b24297ed9cfe"
    },
    {
      "file": "oscillopsia-1.svg",
      "title": "Horizontal motion",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/oscillopsia.html#sources",
      "clinicalSource": "https://my.clevelandclinic.org/health/symptoms/oscillopsia",
      "sha256": "1beccf3ea56c6a668e89bb49e77df36097959ccc2287fcabed5a9d150f4fccdf"
    },
    {
      "file": "oscillopsia-2.svg",
      "title": "Vertical motion",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/oscillopsia.html#sources",
      "clinicalSource": "https://my.clevelandclinic.org/health/symptoms/oscillopsia",
      "sha256": "24473ac196ab7085c91a20f4b84f33e3619646fd5cc0bfb492cb0d715c9ce7b6"
    },
    {
      "file": "oscillopsia-3.svg",
      "title": "Combined motion",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/oscillopsia.html#sources",
      "clinicalSource": "https://my.clevelandclinic.org/health/symptoms/oscillopsia",
      "sha256": "bf1ea7ec28cabe17a28532feb9193b94f41217bca90fb6a4e4c1ee09e6602314"
    },
    {
      "file": "metamorphopsia-1.svg",
      "title": "Bent straight lines",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/metamorphopsia.html#sources",
      "clinicalSource": "https://www.asrs.org/patients/retinal-diseases/19/epiretinal-membranes",
      "sha256": "08c50d270ac1796abd20b6738a1b4571875e1833f55393837befc7324a87b2c3"
    },
    {
      "file": "metamorphopsia-2.svg",
      "title": "A different wave size",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/metamorphopsia.html#sources",
      "clinicalSource": "https://www.asrs.org/patients/retinal-diseases/19/epiretinal-membranes",
      "sha256": "df16bd1c501491cdbc54757ad941dd5b1167ad2bde9da5d0f051b2e629432f6e"
    },
    {
      "file": "metamorphopsia-3.svg",
      "title": "Distortion with blur",
      "kind": "original VisualSim schematic",
      "evidence": "/conditions/metamorphopsia.html#sources",
      "clinicalSource": "https://www.asrs.org/patients/retinal-diseases/19/epiretinal-membranes",
      "sha256": "c2291182a3e2de459c3e05283777fed1c78b6e5a737fbc055af0e5d23e67ba80"
    }
  ],
  "scenes": [
    {
      "file": "color-scene.svg",
      "title": "Labelled color and shape scene",
      "kind": "original VisualSim scene; not a color vision test",
      "clinicalSource": "https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/color-blindness/testing-color-vision-deficiency",
      "sha256": "df002bbd5a7e6155d4e9419ac8dbc424a798f1cc6614ed350892198571a9ed98"
    }
  ],
  "researchFigures": [
    {
      "file": "research/visual-snow-study.jpg",
      "paper": "Puledda et al. 2020. Visual snow syndrome: a clinical and phenotypical description of 1,100 cases.",
      "figure": "Figure 1",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC7136068/",
      "license": "CC BY 4.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
      "modified": false,
      "sha256": "45cd5e703aa6516023e3e1389a5b1ac256f613db0a5f5dd933d930c6222fa60d"
    },
    {
      "file": "research/charles-bonnet-study.jpg",
      "paper": "Bridge et al. 2024. Neurochemistry and functional connectivity in the brain of people with Charles Bonnet syndrome.",
      "figure": "Figure 2",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC11481065/",
      "license": "CC BY 4.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
      "modified": false,
      "disclosure": "Published reconstructions used DALL-E 3, based on participant descriptions. Chart shows combined NEVHI scores.",
      "sha256": "22e471d32322b4ff91e5feb5a791567e8b1f2c5336a7f32ae6df8f2b49f32431"
    }
  ]
}