The incidence of dry eye disease (DED) may be higher in patients with obstructive sleep apnea who are treated with a continuous positive airway pressure (CPAP) device or other nasal mask therapy devices.

There is also a gender component to this increased incidence of DED, with women with sleep apnea having a higher incidence. 

While the prevalence of DED is considered to be about 6.8% in US adults, the percentage of patients who have been diagnosed clinically with DED is less than half of that.

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