Anxiety in glaucoma suspects may be associated with future diagnosis
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Glaucoma may be more likely to develop in glaucoma suspects with a history of anxiety or both anxiety and depression, according to a retrospective cohort study in British Journal of Ophthalmology.
“While there is substantial evidence, the role of psychiatric disorders in glaucoma remains complicated,” Samuel Berchuck, PhD, of Duke University, and colleagues wrote. “Although they may certainly be a consequence of visual loss and glaucoma diagnosis, they may also contribute to disease progression over time.”
To assess the relationship among anxiety, depression and glaucoma progression, Berchuck and colleagues evaluated data from 3,259 adults with a diagnosis of glaucoma suspect in the Duke Glaucoma Registry from 2012 to 2019 and recorded the time to glaucoma diagnosis from the baseline glaucoma suspect diagnosis.
Various combinations of psychiatric diagnoses were considered in the study: anxiety vs. no anxiety; depression vs. no depression; and a mutually exclusive four-level categorical variable of no psychiatric diagnoses, anxiety only, depression only, and both anxiety and depression. Diagnoses of anxiety or depression had to be present 5 years before the baseline diagnosis of glaucoma suspect.
Within the cohort, 1,465 patients (46%) had either depression or anxiety, and 607 patients (19%) had both depression and anxiety. Psychiatric diagnoses were more likely in women and Caucasian patients (both P < .001).
Glaucoma was diagnosed in 911 patients (28%) during follow-up, with an association between glaucoma and psychiatric diagnosis at baseline (P = .013). Of patients with both anxiety and depression, 33% were diagnosed with glaucoma during follow-up.
Risk for glaucoma development was increased by 20% in patients with baseline anxiety (P = .010) and by 15% in patients with baseline depression.
In multivariable modeling, the effect of anxiety remained statistically significant, but depression did not. In patients with both psychiatric diagnoses, the effect was statistically significant.
Risk for glaucoma development also increased with older age, male gender, higher IOP and worse disease severity at baseline, while Asian race was found to be a protective factor.
“Given that a diagnosis of anxiety or depression in our study occurred before an eventual diagnosis of glaucoma, our findings may suggest that anxiety is a predictive factor in developing glaucoma, not only a consequence of glaucoma,” Berchuck and colleagues wrote. “The reason why anxiety would be associated with worse outcomes in suspects is unclear.”