Categorias: Todos - symptoms - treatment - causes - diagnosis

por Nikki Brodbeck 10 anos atrás

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Aniridia

Aniridia is a rare congenital eye condition affecting approximately 1 in 60,000 people in the United States, with no gender or racial preference. It is usually diagnosed during infancy and is caused by mutations in the PAX6 gene, and sometimes by mutations in AN1 and AN2 genes or chromosomal deletions.

Aniridia

Aniridia

Treatment

Treatment for strabismus
Botox
Prisms
Surgery
Vision therapy
Treatment for photophobia/nystagmus
Tinted IOLs (intraocular lenses)
Tinted glasses
Tinted/iris contacts
Treatment for poor visual acuity
Low vision aids
Contacts
Glasses
Cataract surgery
Treatment for glaucoma
Cyclocryotherapy
Laser therapy
Goniotomy
Trabeculectomy
Prostaglandin analogues
Carbonic anhydrase inhibitors
Sympathomimetics
Beta-blockers
Miotics

Example Case

Symptoms related to aniridia
Microopthalmus
Strabismus (Esotropia)
Case History
2nd degree burn on face from iron at 1 y.o.
Mother has glaucoma and vision issues
Has twin sister
Born via C-section 1 month prematurely
Healthy, no meds., no allergies
Basic Info
MRN: 91036918
6 y.o. black female

Research

Recurrent progressive anterior segment fibrosis syndrome following a descemet‑stripping endothelial keratoplasty in an infant with congenital aniridia
Postnatal manipulation of Pax6 dosage reverses congenital tissue malformation defects

Differential Diagnoses

Gillespie syndrome
Congenital nystagmus
Juvenile gluacoma
Congenital cataracts
Renal ultrasounds to detect tumors and anomalies of the kidneys indicative of WAGR syndrome
Fluorescent in situ hybridization (FISH) used to detect deletions in Wilm tumor genes
Genetic testing for deletions/mutations in chromosomes and genes specific to the condition

Causes

Mutations of AN1 and AN2 genes
Chromosomal deletion of p13 on chromosome 11
Mutation in PAX6 gene

Photos

Presentation

Other possible associated conditions
Gillespie Syndrome
WAGR syndrome

Mental retardation

Genitourinary anomolies

Wilms tumor

Microcornea
Arcus juvenilis
Spontaneous lens dislocation
Ectopia lentis
Keratoconus
Albinism
Strabismus
Optic nerve hypoplasia
Nystagmus
Foveal hypoplasia
Glaucoma
Cataracts
Photophobia
Reduced visual acuity (20/200 or less)
Abnormal pupils
Complete or partial absence of the iris

Epidemiology

Equal in males and females
Diagnosis typically made at infant stage
Easier to diagnose at early stages in Caucasians
Cataracts may develop before 13 years of age
Glaucoma diagnosed between ages 11-20
No racial predisposition exists
1 in 60,000 people have this condition in the US