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Effect of oral linoleic and γ-linolenic acid on meibomian gland dysfunction

Pinna, Antonio <1963- > and Piccinini, Paolo and Carta, Francesco (2007) Effect of oral linoleic and γ-linolenic acid on meibomian gland dysfunction. Cornea, Vol. 26 (3), p. 260-264. eISSN 1536-4798. Article.

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DOI: 10.1097/ICO.0b013e318033d79b

Abstract

Purpose: To assess the effect of oral linoleic and γ-linolenic acid, 2 ω-6 essential fatty acids, on meibomian gland dysfunction (MGD).
Methods: Fifty-seven patients with MGD (27 men and 30 women) were randomly divided into 3 groups of 19. Group A received tablets containing linoleic acid (28.5 mg) and γ-linolenic acid (15 mg) once daily. Group B performed eyelid hygiene once daily. Group C received both treatments. Initially and after 60 and 180 days of therapy, all patients completed a self-evaluation questionnaire on ocular surface disorders and underwent slit-lamp examination. The following signs were evaluated: eyelid edema, eyelid margin hyperemia, meibomian secretion appearance, meibomian gland obstruction, foam collection in the tear meniscus, conjunctival hyperemia, conjunctival papillae, and corneal staining.
Results: Statistically significant improvement in symptoms occurred in all groups. After 180-day therapy, group A showed significant reduction in secretion turbidity (P = 0.02) and meibomian gland obstruction (P = 0.0001), whereas group B had significant reduction in eyelid edema (P = 0.02), corneal staining (P = 0.01), secretion turbidity (P = 0.01), and meibomian gland obstruction (P = 0.0001). Group C had significant reduction in eyelid edema (P = 0.003), foam collection in the tear meniscus (P = 0.02), corneal staining (P = 0.02), secretion turbidity (P = 0.0001), and meibomian gland obstruction (P = 0.0001).
Conclusions: Therapy with linoleic and γ-linolenic acid tablets along with eyelid hygiene improves symptoms and reduces eyelid margin inflammation in MGD more than either ω-6 fatty acids or eyelid hygiene alone.

Item Type:Article
ID Code:3746
Status:Published
Refereed:Yes
Uncontrolled Keywords:Meibomian gland dysfunction, therapy, linoleic acid, γ -linolenic acid, ω-6 fatty acids
Subjects:Area 06 - Scienze mediche > MED/30 Malattie apparato visivo
Divisions:001 Università di Sassari > 03 Istituti > Oftalmologia, Otorinolaringoiatria e Urologia
Publisher:Lippincott Williams & Wilkins
eISSN:1536-4798
Deposited On:16 Apr 2010 17:24

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