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Updated: Aug 3, 2026
12:06
Optic Nerve Transection: A Model of Adult Neuron Apoptosis in the Central Nervous System
Published on: May 12, 2011
Summary
Patients with Creutzfeldt-Jakob disease may lose voluntary eye closure while retaining reflex blinking. This symptom suggests lesions in cortical neurons, not motor tracts, in supranuclear palsy.
Area of Science:
- Neurology
- Neuroscience
- Ophthalmology
Background:
- Creutzfeldt-Jakob disease (CJD) is a rare, fatal neurodegenerative disorder.
- Understanding the specific neurological deficits in CJD is crucial for diagnosis and management.
Observation:
- Three patients with Creutzfeldt-Jakob disease exhibited an inability to voluntarily close their eyes.
- This voluntary eye closure deficit was present alongside preserved reflex blinking.
Findings:
- In one patient, this was an early symptom of CJD.
- In other patients, it was part of a more generalized spastic paralysis.
- The findings suggest supranuclear palsy affecting cortical neurons.
Implications:
- This specific eye movement abnormality may serve as an early diagnostic indicator for CJD.
- Lesions in cortical neurons are implicated, rather than descending motor tracts, in this type of supranuclear palsy.
- Further research into the precise neural pathways involved in voluntary eye closure in CJD is warranted.
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