Premium
P2‐298: CONVERGENCE INSUFFICIENCY AND COGNITIVE IMPAIRMENT IN PARKINSONIAN DISORDERS
Author(s) -
Holden Samantha K.,
Van Dok Erin L.,
Pelak Victoria S.
Publication year - 2018
Publication title -
alzheimer's and dementia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.713
H-Index - 118
eISSN - 1552-5279
pISSN - 1552-5260
DOI - 10.1016/j.jalz.2018.06.987
Subject(s) - convergence insufficiency , cognition , diplopia , psychology , audiology , convergence (economics) , physical medicine and rehabilitation , medicine , psychiatry , surgery , ophthalmology , economics , economic growth
Background: Convergence insufficiency, an inability to coordinate binocular eye movements to maintain single vision during near target viewing, is increasingly recognized as a cause of disabling visual dysfunction for near tasks (i.e. reading) in parkinsonian conditions, and is most often reported by patients as double vision. While cognitive complaints may be more common in patients with Parkinson’s disease who report diplopia, the relationship between cognitive impairment, subjective visual symptoms, and objectively measured convergence insufficiency has not previously been investigated. Methods: Twenty-four participants with parkinsonian disorders (21 Parkinson’s disease, 4 progressive supranuclear palsy) referred for neuro-ophthalmologic evaluation with objective findings of convergence insufficiency (near point of convergence of 10 cm or a near/ distance exotropia disparity of 10 prism diopters), with visual acuity better than 20/40 best corrected, were included in this analysis. Subjective reports of visual symptoms of convergence insufficiency (i.e. near task symptoms of blurred or double vision or eye strain) were recorded. Participants completed the SelfAdministered Gerocognitive Examination (SAGE) as a global