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Related Experiment Videos

N-acetylcysteine in chronic blepharitis.

Elvan Yalçin1, Feyza Altin, Feriha Cinhüseyinoglue

  • 1Ophthalmology Department, SSK Okmeydani Training Hospital, Kayisdagi cad., Eston camlievler sitesi A8D17, Sahilcami, Içerenköy 81120, Istanbul, Turkey. yalcina@renault-mais.com.tr

Cornea
|February 28, 2002
PubMed
Summary

Oral N-acetylcysteine (NAC) significantly improved fluorescein break-up time (FBUT) and mucous fern patterns in patients with chronic posterior blepharitis. This suggests NAC is a promising treatment for this condition.

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Area of Science:

  • Ophthalmology
  • Pharmacology

Background:

  • Chronic posterior blepharitis is an inflammatory condition affecting the eyelids.
  • Current treatments include topical steroids, antibiotics, and artificial tears, with varying efficacy.

Purpose of the Study:

  • To investigate the therapeutic effects of oral N-acetylcysteine (NAC) on chronic posterior blepharitis.
  • To evaluate NAC's impact on key clinical markers of blepharitis.

Main Methods:

  • A prospective randomized controlled study involving 40 patients (79 eyes).
  • Patients received either standard treatment (steroids, antibiotics, artificial tears) or oral NAC (100 mg three times daily).
  • Evaluated outcomes included Schirmer-1 test, fluorescein break-up time (FBUT), and mucous fern tests over 1-4 months.

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Main Results:

  • The NAC therapy group showed a significant increase in FBUT (p < 0.0001).
  • Mucous fern patterns were also significantly improved in the NAC group (p = 0.0096).

Conclusions:

  • Oral N-acetylcysteine (NAC) demonstrates efficacy in improving tear film stability (FBUT) and ocular surface health in chronic posterior blepharitis.
  • NAC may exert its beneficial effects by inhibiting lipid peroxidation, offering a novel therapeutic approach.