Patient looking straight ahead with lid lift; no collarettes are visible
Same patient looking down; collarettes are visible
Images courtesy of Elizabeth Yeu, MD
Slit lamp evaluation, 10x magnification
Patient looking straight ahead with lid lift; no collarettes are visible
Same patient looking down; collarettes are visible
Images courtesy of Paul Karpecki, OD
Slit lamp evaluation, 10x magnification
Patient looking straight ahead with lid lift; no collarettes are visible
Same patient looking down; collarettes are visible
Images courtesy of Marc Bloomenstein, OD
Slit lamp evaluation, 10x magnification
Lid Library
Demodex mites are associated with 69% of blepharitis cases1
~58% of eye care patients in the US may have Demodex blepharitis1
Lid margin redness is an objective sign of Demodex blepharitis2
*Study design: A retrospective chart review conducted by 7 investigators at 6 eye care clinics in the US of 1032 patients who underwent a slit lamp examination, regardless of chief complaint. Patients were reviewed for DB, which was confirmed by the presence of collarettes.
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;16:1153-1164. 2. Fromstein SR, Harthan JS, Patel J, Opitz DL. Demodex blepharitis: clinical perspectives. Clin Optom (Auckl). 2018;10:57-63.