raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:284454

Acute zonal occult outer retinopathy

Synonyms: AZOOR

Type
Disease
Group
Disorder
Inheritance
Not applicable
Age of onset
Adolescent, Adult
Status
active

A rare acquired retinal disorder characterised by sequential focal degeneration of photoreceptors, retinal pigment epithelium and choroid, with the majority of patients experiencing sudden onset photopsia and acute scotomas. Although patients typically retain decent visual acuity, blind spot enlargement and retinal pigment epithelial disturbances tend to develop over time. Individuals also often complain of distortion of central vision, photophobia and difficulty with night vision, with more advanced cases reporting loss of peripheral vision.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAcute zonal occult outer retinopathyAZOOR
frRétinopathie occulte externe zonale aiguë= en
deRetinopathie, akute äußere okkulte zonale= en
esRetinopatía aguda zonal oculta externa= en
itRetinopatia acuta occulta periferica= en
nlAcute zonale occulte perifere retinopathie= en
ptRetinopatia oculta externa zonal aguda
plOstra zewnętrzna utajona retinopatia strefowa= en
csAkutní zonální okultní zevní retinopatie= en
ukГостра зональна прихована зовнішня ретинопатія= en
zh急性带状隐匿性外视网膜病变= en
trAkut zonal gizli dış retinopati= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10H35.0NTBTattributedvalidated
ICD-119B65.0NTBTindexvalidated
MONDO0017298Evalidated
UMLSC0730298Evalidated
GARD8640Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families150 casesWorldwideCase(s)Validated21056448[PMID]
Point prevalenceUnknown—WorldwideClass onlyValidatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

24 annotations · validated 2021-03-31
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0030604Abnormal fundus fluorescein angiography
HP:0000539Abnormality of refraction
HP:0030644Blind-spot enlargment
HP:0000622Blurred vision
HP:0001133Constriction of peripheral visual field
HP:0200057Marcus Gunn pupil
HP:0000545Myopia
HP:0030786Photopsia
HP:0000575Scotoma
HP:0001123Visual field defect
Occasional (29-5%)
HP:0000512Abnormal electroretinogram
HP:0000603Central scotoma
HP:0012377Hemianopia
HP:0000580Pigmentary retinopathy
HP:0007663Reduced visual acuity
HP:0007722Retinal pigment epithelial atrophy
HP:0007814Retinal pigment epithelial mottling
HP:0000510Rod-cone dystrophy
HP:0030662Vitreous inflammatory cells
HP:0011531Vitritis
Very rare (<4-1%)
HP:0000610Abnormal choroid morphology
HP:0008046Abnormal retinal vascular morphology
HP:0030499Macular drusen
HP:0000572Visual loss

Annotation source: 30578522[PMID]_30042791[PMID]_32796345[PMID]_21056448[PMID]_29572353[PMID]

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Sources for this card