Parkinson Disease Clinical Trial
Official title:
Study Regarding the Realization of a Standardized Protocol for the Evaluation of the Visual Condition in Parkinson's Disease
Non motor symptoms and signs in Parkinson's disease (PD) also include a series of visual deficits; deepening these aspects could be useful for a better management of symptoms, to standardize a specific protocol for the issues related to vision and also to understand how these aspects are important for the understanding of the mechanisms underlying the PD.
In Parkinson's disease (PD) several non-motor signs and symptoms already occur in the early
stages of the disease; the symptoms are diverse and these also involve visual difficulties
which commonly affect the majority of patients and which gradually worsen the quality of
life.
The most common malfunction produced by PD is the dysfunction of dopaminergic pathways that
may be responsible for a series of visual deficits too:
- decreased visual acuity and decreased sensibility to light and color,
- strabismus and forms of sensory and eye movement dysfunctions,
- eyelid dysfunctions and dry eye syndrome
Moreover, in patients affected by PD, typical retinal features were discovered for the first
time in 2004 by the use of OCT (Optical Coherence Tomography) such as:
- the reduction of the retinal nerve fiber layer (RNFL)
- a typical thinning of the macular thickness, even if with different results. In the
follow-up of the PD, these retinal features, verifiable by the use of OCT, could be
considered as a marker of the pathology.
For these reasons it may be useful:
- quantify in an objective manner how much the visual aspects affect the overall
deterioration of the quality of life in patients with PD
- demonstrate the validity of a specific and integrated outpatient diagnostic protocol for
the study of visual and ophthalmological disorders in patients with PD
- demonstrate the diagnostic role of early changes in macular thickness and of the optic
disc in subjects suffering from PD using the OCT
- establish orthoptic evidence in patients with PD
;
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