Evidence map›Paper›PMID 39648446›Full record

ArticleJournal of movement disorders2025

Video-Oculography for Enhancing the Diagnostic Accuracy of Early Oculomotor Dysfunction in Progressive Supranuclear Palsy.

Harshad Chovatiya, Kanchana Pillai, Chakradhar Reddy, Amiya Thalakkattu, Ayana Avarachan, Manas Chacko, Asha Kishore

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Article in Journal of movement disorders, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Harshad ChovatiyaParkinson and Movement Disorder Centre, Department of Neurology, Aster Medcity, Kochi, Kerala, India.
Kanchana PillaiParkinson and Movement Disorder Centre, Department of Neurology, Aster Medcity, Kochi, Kerala, India.
Chakradhar ReddyParkinson and Movement Disorder Centre, Department of Neurology, Aster Medcity, Kochi, Kerala, India.
Amiya ThalakkattuParkinson and Movement Disorder Centre, Department of Neurology, Aster Medcity, Kochi, Kerala, India.
Ayana AvarachanParkinson and Movement Disorder Centre, Department of Neurology, Aster Medcity, Kochi, Kerala, India.
Manas ChackoParkinson and Movement Disorder Centre, Department of Neurology, Aster Medcity, Kochi, Kerala, India.
Asha KishoreParkinson and Movement Disorder Centre, Department of Neurology, Aster Medcity, Kochi, Kerala, India.

Funding

Aster Medcity, Kerala, India IMRS030
6 · The paper itself

Abstract

objectiveOculomotor impairment is an important diagnostic feature of progressive supranuclear palsy (PSP) and PSP subtypes. We assessed the role of video-oculography (VOG) in confirming clinically suspected slow saccades in PSP and differentiating PSP from Parkinson's disease (PD). We also measured the correlation of both saccadic velocity and latency in PSP patients with scores on the PSP Rating Scale, Montreal Cognitive Assessment, and frontal assessment battery. We assessed the frequency of apraxia of eyelid opening (ALO) and reflex blepharospasm in PSP and PD patients.

methodsA total of 112 PSP patients with slow saccades but not gaze palsy, 50 PD patients, and 50 healthy controls (HCs) were recruited. The Movement Disorders Society task force-PSP and PD criteria were used for the diagnoses. All the subjects underwent VOG.

resultsHorizontal and vertical saccadic velocities and latencies differentiated PSP patients from PD patients and HCs (p<0.001). Vertical saccadic velocity and latency accurately differentiated PSP with predominant parkinsonism (PSP-P) patients from PD patients (p<0.001 and 0.012, respectively). A couple of vertical and horizontal saccadic velocities differentiated PSP-Richardson's syndrome (PSP-RS) patients from PSP-P patients (vertical velocity of left eye: p=0.024; horizontal velocity of right eye: p=0.030). In vertical gaze, the mean velocity cutoff showed good sensitivity and specificity in differentiating PSP patients from HCs and PD patients. Prolonged horizontal gaze latency was associated with more severe PSP and worse global cognitive and frontal dysfunction. ALO and reflex blepharospasm were observed only in PSP patients.

conclusionVOG is useful for confirming slow saccades in PSP-RS and PSP-P patients and for differentiating PSP-P patients from PD patients. Prolonged horizontal gaze latency was associated with more severe PSP and worse cognitive dysfunction. ALO and reflex blepharospasm were observed only in PSP patients.

Indexed as

Parkinson’s diseaseProgressive supranuclear palsyVideo-oculography

Identifiers

PMID39648446
PMCPMC11824506

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.