Ocular immunology and inflammation · 2021
In Vivo Confocal Microscopy in Blepharitis Patients with Ocular Demodex Infestation.
СтатьяНазвание и аннотация: Перевод в очереди
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Yildiz-Tas Ayse, Arici Ceyhun, Mergen Burak, Sahin Afsun
Аннотация
PURPOSE: To compare corneal in-vivo confocal microscopy (IVCM) findings in patients with seborrheic blepharitis with healthy controls and to evaluate the correlation with the Demodex load.
METHODS: Sixty-two Demodex positive seborrheic blepharitis patients and 24 controls were included. Four eyelashes from each eye were examined. The median value of Demodex count (5 mites/eye) was assigned as the cutoff value to create low and high Demodex infestation subgroups. Corneal nerve parameters (fiber length;CNFL, fiber density;CNFD, branch length;CNBL, branch density;CNBD) and dendritic cell density (DCD) were analyzed by IVCM for all participants.
RESULTS: The mean DCD of eyes in low (37.62 ± 25.18 cells/mm2) and high (76.00 ± 44.00 cells/mm2) Demodex load groups were significantly higher than those in the control group (14.25 ± 2.68 cells/mm2) (p < .001). CNFL, CNFD, CNBL and CNBD were significantly lower in low and high Demodex groups compared to controls (p < .001).
CONCLUSIONS: Demodex positive seborrheic blepharitis patients showed significantly reduced density of corneal nerves and elevated DCD levels.
METHODS: Sixty-two Demodex positive seborrheic blepharitis patients and 24 controls were included. Four eyelashes from each eye were examined. The median value of Demodex count (5 mites/eye) was assigned as the cutoff value to create low and high Demodex infestation subgroups. Corneal nerve parameters (fiber length;CNFL, fiber density;CNFD, branch length;CNBL, branch density;CNBD) and dendritic cell density (DCD) were analyzed by IVCM for all participants.
RESULTS: The mean DCD of eyes in low (37.62 ± 25.18 cells/mm2) and high (76.00 ± 44.00 cells/mm2) Demodex load groups were significantly higher than those in the control group (14.25 ± 2.68 cells/mm2) (p < .001). CNFL, CNFD, CNBL and CNBD were significantly lower in low and high Demodex groups compared to controls (p < .001).
CONCLUSIONS: Demodex positive seborrheic blepharitis patients showed significantly reduced density of corneal nerves and elevated DCD levels.