Evidence map›Paper›PMID 40881893›Full record

ArticleWorld journal of clinical cases2025

Ishihara color plates utilized as an assessment for simultanagnosia in posterior cortical atrophy: A case report.

Francesco Pellegrini, Alessandra Cuna, Mutali Musa, Fabiana D'Esposito, Rosa Giglio, Daniele Tognetto, Caterina Gagliano, Marco Zeppieri

Abstract readCase Reports
PubMed Full text at PMC Publisher
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Article in World journal of clinical cases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Francesco PellegriniDepartment of Ophthalmology, ASFO Pordenone Hospital, Pordenone, Italy, Pordenone 33170, Italy.
Alessandra CunaDepartment of Ophthalmology, "De Gironcoli" Hospital, AULSS2 Marca Trevigiana, Conegliano 31100, Italy.
Mutali MusaDepartment of Optometry, University of Benin, Benin 300283, Nigeria.
Fabiana D'EspositoImperial College Ophthalmic Research Group Unit, Imperial College, London NW1 5QH, United Kingdom.
Rosa GiglioDepartment of Medicine, Surgery and Health Sciences, University of Trieste, Trieste 34129, Italy.
Daniele TognettoDepartment of Medicine, Surgery and Health Sciences, University of Trieste, Trieste 34129, Italy.
Caterina GaglianoDepartment of Medicine and Surgery, University of Enna "Kore", Enna 94100, Italy.
Marco ZeppieriDepartment of Medicine, Surgery and Health Sciences, University of Trieste, Trieste 34129, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSimultanagnosia is a neurological disorder that impairs an individual's ability to perceive more than one object at a time visually. While the individual may acknowledge the presence of multiple objects in his field of view, he cannot generally summarize the overall percept. CASE SUMMARY: We describe a case of simultanagnosia in Posterior Cortical Atrophy, evidenced by the Ishihara color test. A 54-year-old woman complained of reading problems despite normal visual acuity and a structural eye exam. The patient failed to identify any of the Ishihara color plates in either eye despite adequate naming of colors. Automated visual field testing showed a homonymous hemianopia. Structural and functional neuroimaging and cerebrospinal fluid analysis were consistent with posterior cortical atrophy.

conclusionSimultanagnosia can be tested with the Ishihara pseudoisochromatic plates because the recognition of embedded number patterns in the test requires appreciation of a collection of individual stimuli.

Indexed as

Benson syndromeCase reportColor visionIshihara color platesPosterior cortical atrophySimultanagnosia

Identifiers

PMID40881893
PMCPMC12362458

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