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ORPHA:447788

Cerebral visual impairment

low confidenceDisorder

Also known as: Cortical visual impairment

Publications

2,261

Trials

12

Interventional, condition-specific

Researchers

971

Distinct authors in sample

Gene link

—

Readiness

2/6

Stages with a signal

Clinical definition (Orphanet)

A rare neurologic disease characterized by significant visual dysfunction that cannot be explained by ocular abnormalities alone and is due to damage to post-chiasmatic visual pathways and structures during early perinatal development. Signs and symptoms include decreased visual acuity, visual field defects, and impairments in visual processing and attention.

How rare: How common this is has not been clearly measured.

Orphanet entry

Cross-references

Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.

Research stages

Trial readiness signals

Where this condition sits on an open-data research pipeline — not how close a treatment is, and not medical advice. Empty stages often mean “not in these databases under this Mondo ID,” not “impossible.”

2/6 stages with a signal

An interventional trial matched this condition name on ClinicalTrials.gov — see trials below.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    2,261 matched papers (1,693 in last 10 years) Source

  3. Phenotype characterisedNot checked

    Not yet enriched from Monarch / HPO

  4. Animal modelNot checked

    Not yet enriched from Monarch / Alliance

  5. Orphan designationNot checked

    FDA/EMA orphan-drug designation not enriched yet

  6. Interventional trialPresent

    12 matched on ClinicalTrials.gov (4 recruiting in sample)

Biology

Genes and phenotypes

Gene–disease validity from GenCC, plus phenotypes and animal models joined from Monarch Initiative via Mondo ID — not a clinical diagnosis aid.

Do we know what causes it?

Not yet — the cause hasn't been pinned down in GenCC.

No strong gene–disease assertion joined for this Orphanet entity.

Phenotypes (Monarch / HPO)

Not enriched in this build — Monarch phenotype joins were not run for this record.

Animal models (Monarch / Alliance)

Not enriched in this build.

Literature

Is anyone studying this?

2,261

2,261 papers have been published on this condition. That is a real research literature — still far smaller than common diseases (breast cancer: over 700,000 papers). Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=5449) is 41.

2,261 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 41 (publications denominator n=5449).

1,693 in the last 10 years · low confidence

Phrase hits: 2,261 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

971

Distinct author names in 200 sampled papers — named people below.

Who's working on it?

People publishing on this condition (sampled Europe PMC records). Affiliation is the most recent found in that sample.

  1. 01
    Merabet LB15 papers · 2026

    The Laboratory for Visual Neuroplasticity, Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA.

    Papers in Europe PMC
  2. 02
    Chang MY11 papers · 2026

    Keck School of Medicine of USC, Los Angeles, California; Division of Ophthalmology, Children's Hospital Los Angeles, Los Angeles, California. Electronic address: melinda.y.wu@gmail.com.

    Papers in Europe PMC
  3. 03
    Borchert MS8 papers · 2026

    Keck School of Medicine of USC, Los Angeles, California; Division of Ophthalmology, Children's Hospital Los Angeles, Los Angeles, California.

    Papers in Europe PMC
  4. 04
    Bauer CM7 papers · 2025

    Laboratory for Visual Neuroplasticity, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 02114, USA.

    Papers in Europe PMC
  5. 05
    Manley CE7 papers · 2026

    The Laboratory for Visual Neuroplasticity, Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, 20 Staniford Street, Boston, MA, 02114, USA.

    Papers in Europe PMC
  6. 06
    Bowman R6 papers · 2026

    Honorary Clinical Consultant: International Centre for Eye Health, London School of Hygiene & Tropical Medicine, London, UK.

    Papers in Europe PMC
  7. 07
    Cemali M5 papers · 2026

    Hacettepe University, Ankara, Türkiye.

    Papers in Europe PMC
  8. 08
    Harpster K5 papers · 2026

    Occupational Therapy and Physical Therapy, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.

    Papers in Europe PMC
  9. 09
    Abbott M4 papers · 2026

    Department of Neurology, Children's Hospital Colorado, Aurora, CO, USA.

    Papers in Europe PMC
  10. 10
    Baker K4 papers · 2026

    MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

12

interventional trials for this specific condition

12 interventional trials matched this specific condition name; 4 currently recruiting in our sample.

Data as of 27 July 2026

12 interventional trials — more than 73% of diseases in the trials denominator have none at all (5114 of 7003; this disease is at the 92.5th percentile).

low confidence · 92.5th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

12 interventional trials matched after quoted-phrase search and title/condition post-filter.

Observational and natural-history studies

10 observational studies match this condition. These do not test a treatment and are not counted in the interventional-trial headline, but they are genuine research: natural-history work often defines the endpoints needed for a future rare-disease trial, and families may be able to enroll.

Recruiting or not-yet-recruiting

Open the complete matched search on ClinicalTrials.gov

Where to find support

We do not yet link condition-specific patient organisations. These umbrella groups support undiagnosed and ultra-rare families:

India — NPRD

Last verified 2026-07-26

This ORPHAcode is not on our curated NPRD list (direct or Mondo-parent match). That does not decide clinical eligibility; families in India should ask a notified Centre of Excellence about current coverage.

Hand-curated for this project. ORPHAcode mappings are best-effort and may be incomplete or imprecise for umbrella categories. Parent (Mondo) matches mean the policy lists a broader category — confirm eligibility with a Centre of Excellence. Financial entitlements summarised from public policy statements and may change. This is not official government guidance.

How we counted this

Europe PMC query (preferred label + any corrected label + Orphanet and Mondo exact synonyms, stoplisted; unioned with resolved MeSH labels when available). UMLS / OMIM / NCIT cross-references are stored on the overview but are not added to the query string.

"Cerebral visual impairment" OR "Cortical visual impairment"

Run this search on Europe PMC

ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):

"Cerebral visual impairment" OR "Cortical visual impairment"

Interventional trials matched via: phrase (mesh = registered under a MeSH descriptor no name phrase would catch; recall-expansion = gene / selected parent terms used only for trials).

Study-type breakdown: 12 interventional · 10 observational · 0 expanded access. Only interventional studies enter the trial headline.

Query health: ok — strategies attempted: phrase; with hits: phrase

Run this search on ClinicalTrials.gov

Confidence reasoning

  • Preferred label is multi-word and distinctive
  • No synonyms dropped by stoplist
  • No label/synonym collisions with other diseases in this corpus
  • Publication count (2261) is extremely high with unknown/missing prevalence — treat as possible over-matching, not proven research intensity

Ingested 2026-07-27T16:33:17.930Z