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  • Title: Therapeutic effect of intense pulsed light with optimal pulse technology on meibomian gland dysfunction with and without ocular Demodex infestation.
    Author: Huo Y, Mo Y, Wu Y, Fang F, Jin X.
    Journal: Ann Transl Med; 2021 Feb; 9(3):238. PubMed ID: 33708865.
    Abstract:
    BACKGROUND: To evaluate the therapeutic effect of intense pulsed light (IPL) therapy with optimal pulse technology (OPT) on meibomian gland dysfunction (MGD) with and without ocular Demodex infestation. METHODS: This prospective study included 150 patients with MGD who were divided into Demodex-infested (DI) and non-infested (control) groups according to Demodex counts determined by epilating eyelashes to evaluate. Each patient underwent three OPT treatment sessions at 3-week intervals. Best corrected visual acuity (BCVA), intraocular pressure (IOP), Demodex counts, Ocular Surface Disease Index (OSDI) score, conjunctival congestion, tear meniscus height (TMH), tear breakup time (TBUT), Schirmer I test (SIT), corneal and conjunctival fluorescein staining scores, meibomian gland (MG) macrostructure, lid margin abnormality, MG expressibility, and meibum quality were assessed before the first treatment as baseline and at 1, 2, and 3 months (M1, M2 and M3, respectively) after treatment. RESULTS: The incidence of Demodex infestation was 59.15% (84/142) at baseline and the final Demodex eradication rate at M3 was 83.3% (70/84). Corneal staining and conjunctival congestion showed slower improvement in the DI group than in the control group at M1 and M2 (P<0.05), but was significantly improved at M3 than that at with baseline (P<0.01). Both the groups showed significant improvement in OSDI, conjunctival congestion, TBUT, corneal and conjunctival staining, MG dropout, lid margin abnormality, MG expressibility, and meibum quality at M3 (P<0.05). No differences were observed for BCVA, IOP, SIT, and TMH before and after treatment in both the groups (P>0.05). CONCLUSIONS: This new-generation IPL with OPT treatment results in greater improvement in MG expressibility and meibum quality in MGD patients with Demodex infestation than in those without, but not for corneal staining.
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