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Objective: To describe the characteristics of patients acquired Posner-Schlossman syndrome (PSS) in Vietnam over a 2-year period and find out the underlying causes of PSS. Subject and method: This study was a retrospective case-series analysis of the clinical charts of 31 patients diagnosed with PSS. All the patients were collected characteristic information 081 and suspected to have CMV or HSV and had undergone real-time PCR of the aqueous humour to determine whether patients have CMV, HSV-positive or CMV, HSV-negative. Result: The mean age of the patients at the initial examination was 50.2 ± 17.4 years. The mean age at the first PSS attack was 45.6 ± 11.6 years. The mean IOP was significantly higher in the affected eyes than in the unaffected eyes (p=0.02). The average BCVA (p=0.14) were lower in the affected eyes than in the unaffected eyes but not reached statistical significance. The majority of these patients were aged 20 - 60 years (64.5%). Autumn demonstrated a little bit higher onset of PSS than other seasons. 33.2% of patients with PSS revealed the CMV cause, the figure for HSV1 was 6.5%. There was no statistical difference about infectious causes between male and female. Conclusion: PSS seems to appear mostly in the middle age. In Vietnam, CMV was the most popular causes of patients with PSS, the second most common causes of this disease was HSV1.
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