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Congenital stromal corneal dystrophy (CSCD) is an extremely rare form of stromal corneal dystrophy characterized by opaque flaky or feathery clouding of the corneal stroma, and moderate to severe visual loss.
Data assembled from 7 of 12 sources · Last updated Sep 19, 2026, 11:55 AM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Features include always present findings: Clouding of the cornea (corneal dystrophy); and common findings: Strabismus. 8 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Eyes | 6 | Strabismus, Clouding of the cornea (corneal dystrophy), Band-shaped corneal dystrophy |
Age of onset: newborn period.
Only seven families with the characteristic findings of congenital stromal corneal dystrophy (CSCD) have been reported in the literature [, , , , , , ]. Some interfamilial variation has been noted among the affected individuals. In addition, have reported a family with late onset of features resembling CSCD. In a Norwegian family with 11 affected individuals, bilateral corneal opacities were observed at or slightly after birth . Slit lamp examination revealed small flakes and spots distributed in all layers of the stroma from limbus to limbus. The surface of the cornea was slightly irregular. Most affected individuals had best corrected visual acuity within the range of 0.3-0.63. Four out of 11 had strabismus. None had nystagmus. The corneal diameter was normal.
Source: GeneReviews — "Congenital Stromal Corneal Dystrophy"
DCN encodes decorin (359 aa). May affect the rate of fibrils formation Highest expression in Ovary (685.3 TPM) and Fallopian Tube (591.8 TPM).
Congenital stromal corneal dystrophy is associated with mutations in the DCN gene on chromosome 12.
The DCN protein participates in DCN (decorin) degradation by MMP14 and DCN (decorin) degradation by MMP2, MMP3, MMP7 pathways.
DCN is classified as a druggable target (Druggable Genome category) with score 3.7.
Because of limited data, no genotype-phenotype correlations are evident. In one family reported by , DCN pathogenic variant was associated with a relatively mild form of late-onset disease resembling CSCD.
Source: GeneReviews — "Congenital Stromal Corneal Dystrophy"
Penetrance is complete in the described families.
Source: GeneReviews — "Congenital Stromal Corneal Dystrophy"
Congenital stromal corneal dystrophy (CSCD) should be suspected in individuals with bilateral corneal opacities that are seen at or shortly after birth , particularly if:
The surface of the cornea is normal or slightly irregular.
Small opacities are seen throughout the stroma of the entire cornea and give the cornea a cloudy appearance.
The thickness of the cornea (as measured by ultrasonic pachymetry) is increased. Note: This finding may help distinguish CSCD from other disorders that have normal corneal thickness.
Intraocular pressure is normal.
Transmission electron microscopy of the stroma shows layers of apparently normal collagen fibrils separated by abnormal layers with small filaments embedded in an electron-lucent ground substance .
The di...
Source: GeneReviews — "Congenital Stromal Corneal Dystrophy"
Bilateral congenital opacifications of the cornea can be caused by several disorders/conditions : • Various corneal dystrophies , primarily congenital hereditary endothelial dystrophy (OMIM 217700) • Congenital glaucoma • Systemic storage disease • Malformations of the anterior segment • Inflammation Table 2. Disorders with Bilateral Congenital Opacifications of the Cornea to Consider in the Differential Diagnosis of Congenital Stromal Corneal Dystrophy (CSCD)
Disorder/Condition | Gene(s) / Chromosome Locus | MOI | Additional Clinical Features of This Disorder |
|---|---|---|---|
SLC4A11 | AR | Corneal clouding; Nystagmus | Thick cornea; Corneal edema; Diffuse opacity Posterior polymorphous corneal dystrophy |
Genetic testing for DCN is available. Testing is considered confirmatory for diagnosis.
No approved treatments are currently available for congenital stromal corneal dystrophy. The disease remains an area of unmet medical need.
To establish the extent of disease and needs in an individual diagnosed with congenital stromal corneal dystrophy (CSCD), the evaluations summarized in this section (if not performed as part of the evaluation that led to the diagnosis) are recommended:
Ophthalmologic evaluation that includes the following:
Assessment of visual acuity
Assessment of refractive error
Assessment of motility and strabismus (orthoptic evaluation)
Slit lamp examination
Measurement of corneal thickness using pachymetry
Measurement of intraocular pressure
Consultation with a clinical geneticist and/or genetic counselor
The following are appropriate:
Spectacles or contact lenses for correction of refractive errors
Patching and/or surgical correction of strabismus
Keratoplasty. To reduce the risk of amblyopia, penetrating keratoplasty should be considered in children younger than age seven years. Most grafts remain clear after penetrating keratoplasty even in this age group. There is a single report of a successful deep anterior lamellar keratoplasty in a child age four years .
Visual acuity and routine ophthalmologic examination should be performed at least every year in children. Regular surveillance in adults is not necessary unless they have undergone keratoplasty. Affected individuals should be informed about penetrating keratoplasty and advised to contact their eye doctor in case of reduced visual acuity or increased glare.
Source: GeneReviews — "Congenital Stromal Corneal Dystrophy"
Individuals who have undergone keratoplasty should avoid activities that could cause direct trauma to the eye. No other agents or circumstances need to be avoided.
Source: GeneReviews — "Congenital Stromal Corneal Dystrophy"
Search ClinicalTrials.gov in the US and EU Clinical Trials Register in Europe for information on clinical studies for a wide range of diseases and conditions. Note: There may not be clinical trials for this disorder.
Source: GeneReviews — "Congenital Stromal Corneal Dystrophy"
View trials for congenital stromal corneal dystrophy
Visual acuity and routine ophthalmologic examination should be performed at least every year in children. Regular surveillance in adults is not necessary unless they have undergone keratoplasty. Affected individuals should be informed about penetrating keratoplasty and advised to contact their eye doctor in case of reduced visual acuity or increased glare.
Source: GeneReviews — "Congenital Stromal Corneal Dystrophy"
Phenotype severity distribution: 1 always present feature, 1 common feature.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for congenital stromal corneal dystrophy.
5 publications have been identified in PubMed for congenital stromal corneal dystrophy. Research spans Review / Meta-Analysis (50%), Case Report / Case Series (25%), and Epidemiology / Natural History (25%).
Liskova P (2025). [PMID: 40079222](https://pubmed.ncbi.nlm.nih.gov/40079222/). *Clinical & experimental ophthalmology*. [Review / Meta-Analysis]
Berger T (2024). [PMID: 38437155](https://pubmed.ncbi.nlm.nih.gov/38437155/). *Cornea*. [Case Report / Case Series]
Braddock FL (2024). [PMID: 39169229](https://pubmed.ncbi.nlm.nih.gov/39169229/). *European journal of human genetics : EJHG*. [Epidemiology / Natural History]
Turunen JA (2024). [PMID: 39394466](https://pubmed.ncbi.nlm.nih.gov/39394466/). *European journal of human genetics : EJHG*. [Review / Meta-Analysis]
GRHL2 |
AD |
Corneal clouding w/corneal opacities |
Changes at Descemets membrane endothelium w/vesicular lesions |
Peripheral anterior synechiae Posterior amorphous corneal dystrophy | 12q21.33 | AD | Corneal opacities |
TEK | AR1 | Corneal clouding; Photophobia | Tearing blepharospasm; intraocular pressure; corneal diameter; Breaks in Descemets membrane Mucopolysaccharidosis (I, IV, VI) |
ARSB | AR | Corneal clouding | Systemic involvement Anterior segment dysgenesis (Peters anomaly) |
PITX3 | ARAD | Corneal clouding | Large, central opacities; Iridocorneal adhesions |
Iris anomalies Inflammation | NA | NA | Corneal clouding |
Source: GeneReviews — "Congenital Stromal Corneal Dystrophy"