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Retinal Function in Parkinson's Disease

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ClinicalTrials.gov Identifier: NCT01010074
Recruitment Status : Unknown
Verified November 2009 by Edward Hines Jr. VA Hospital.
Recruitment status was:  Recruiting
First Posted : November 9, 2009
Last Update Posted : November 9, 2009
Sponsor:
Information provided by:

November 6, 2009
November 9, 2009
November 9, 2009
October 2009
December 2010   (Final data collection date for primary outcome measure)
pupillary threshold [ Time Frame: one ]
Same as current
No Changes Posted
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Retinal Function in Parkinson's Disease
Intrinsically Photosensitive Retinal Ganglion Cells in Parkinson's Disease
Parkinson's disease (PD) is a neurodegenerative disorder characterized by muscle rigidity, tremor, a slowing of physical movement (bradykinesia) and, in extreme cases, a loss of physical movement. The primary symptoms are the results of decreased stimulation of the motor cortex arising from the basal ganglia normally caused by the insufficient formation and action of dopamine, which is produced in the dopaminergic neurons of the brain. Secondary symptoms may include high level cognitive dysfunction and subtle language problems. Included in the symptomatology experienced by patients with PD, visual abnormalities are not uncommon. Visual changes among patients with PD appear not only dynamic in nature, but differentially affected based on the course of the disease and, perhaps more importantly, its treatment. Parkinson's disease has significant ramifications not only in observation of irregularities in vision, but how vision interacts with entrainment of the circadian clock. The purpose of this study is to examine the relationship between PD and operation of a unique set of retinal cells known to regulate the circadian clock and sleep-wake cycles in human subjects.
Not Provided
Observational
Observational Model: Case Control
Time Perspective: Cross-Sectional
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Non-Probability Sample
movement disorders/neurology clinic
Parkinson's Disease
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*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Unknown status
50
December 2010
December 2010   (Final data collection date for primary outcome measure)

Inclusion Criteria: age 18-64 best corrected visual acuity of 20/25 or better in each eye -

Exclusion Criteria: evidence of any form of eye disease, inability to understand and sign informed consent.

Sexes Eligible for Study: All
18 Years to 64 Years   (Adult)
Yes
Contact information is only displayed when the study is recruiting subjects
United States
 
 
NCT01010074
PD001
No
Not Provided
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Bruce I. Gaynes, OD, PharmD, Hines VA Medical Center
VA Office of Research and Development
Not Provided
Not Provided
Edward Hines Jr. VA Hospital
November 2009