Demodex blepharitis is a common eyelid margin disease affecting approximately 25 million eye care patients in the U.S.1-2 Untreated, Demodex blepharitis can lead to symptoms such as ocular surface inflammation and may impact daily activities. Despite its high prevalence, awareness and knowledge of Demodex blepharitis remains low. Fortunately, optometrists already have the tools necessary to diagnose it if they know what to look for.
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1. Trattler W, Karpecki P, Rapoport Y, et al. The prevalence of Demodex blepharitis in US eye care clinic patients as determined by collarettes, a pathognomonic sign. Clin Ophthalmol. 2022;16:1153–64.
2. Saydah SH, Gerzoff RB, Saaddine JB, Zhang X, Cotch MF. Eye care among US adults at high risk for vision loss in the United States in 2002 and 2017. JAMA Ophthalmol. 2020;138(5):479-489.