Prevalence of Convergence Insufficiency in Parkinson's Disease. Issue 3 (20th November 2016)

• Record Type: Journal Article
• Authors: Irving, Elizabeth L.; Chriqui, Estefania; Law, Caroline; Kergoat, Marie‐Jeanne; Leclerc, Bernard‐Simon; Panisset, Michel; Postuma, Ronald; Kergoat, Hélène
• Is Part Of: Movement disorders clinical practice. Volume 4:Issue 3(2017)
• Page Start: 424
• Page End: 429
• Publication Date: 2016-11-20
• Subjects: convergence insufficiency -- Parkinson's disease -- prevalence; Movement Disorders; Movement disorders -- Periodicals; Movement disorders; Periodicals; Periodicals; 616
• DOI: 10.1002/mdc3.12453
• Languages: English
• ISSNs: 2330-1619

Abstract

Abstract: Background: We recently reported that convergence insufficiency (CI)‐type visual symptomatology was more prevalent in participants with Parkinson's disease (PD), compared to controls. The objective of this work was to determine the prevalence of a confirmed clinical diagnosis of CI in PD, compared to controls. Methods: Participants with (n = 80) and without (n = 80) PD were recruited and received an eye exam. Published criteria were used to arrive at a clinical diagnosis of CI. The Convergence Insufficiency Symptom Survey (CISS‐15) questionnaire was administered to each participant, with a score of ≥21 being considered positive for CI symptomatology. Student t test, chi‐square, or nonparametric tests at the 0.05 level were used for statistical significance. Results: A total of 43.8% of participants with versus 16.3% without PD had a clinical diagnosis of CI ( P ≤ 0.001). A total of 53.8% of participants with versus 18.8% without PD had scores on the CISS‐15 of ≥21 ( P ≤ 0.001). Conclusions: These results indicate that individuals with PD have a higher prevalence of CI and CI symptomatology than controls. These data provide evidence supporting the notion that treatment for symptomatic CI should be investigated in individuals with PD.