Risks of Glaucoma among Individuals with Psoriasis: A Population-based Cohort Study.

BACKGROUND: Psoriasis is a chronic systemic disorder with ocular involvement.

OBJECTIVES: The aim of the present study is to evaluate the risk of glaucoma among psoriatic patients.

METHODS: Subjects of this cohort study were selected based on Chang Gung Research Database from January 1, 2003, to December 31, 2012. Follow-up ended on December 31, 2017. The participants of the control group were matched with the psoriatic group by gender, age, and index date at a 4:1 ratio. The hazard ratios of glaucoma were estimated using Cox regression analysis. We also evaluated the relationship between the risk of glaucoma and systemic therapies as well as phototherapy and topical corticosteroid in patients with psoriasis.

RESULTS: A total of 6,682 patients with psoriasis and 26,728 matched controls were enrolled. The study population is composed of mainly Males accounting for 64.2% of the study population. The psoriatic group had higher incidence rates than the control group for glaucoma (adjusted hazard ratio 1.405 [95% confidence interval, 1.051-1.879]). Psoriatic patients receiving psoralen and ultraviolet-A (PUVA) therapy for more than 200 sessions had an increased risk of glaucoma.

CONCLUSIONS: Psoriatic patients had an increased risk of glaucoma. Long-term PUVA therapy raised the risk of glaucoma in psoriatic populations.