1. The link between dry eye syndrome and omega-3
To understand the role of omega-3s in dry eye, it's important to note that the tear film is not just water but a three-layered structure: a lipid layer (outermost), a water layer, and a mucous layer. The lipid layer, secreted by the Meibomian glands at the eyelid margins, functions to reduce tear evaporation and maintain the film's stability.
When the body is deficient in omega-3s, the composition and properties of the lipid layer can be altered. Secretions from the Meibomian glands become thicker, more prone to blockage, and less able to evenly coat the surface of the eyeball. As a result, the rate of tear evaporation increases, leading to dry eye symptoms such as dryness, burning, and irritation, even with the use of eye drops.
Furthermore, corneal surface inflammation and Meibomian gland dysfunction are considered important factors in the pathogenesis of chronic dry eye. Omega-3 fatty acids, particularly EPA and DHA, regulate inflammatory responses by reducing the synthesis of inflammatory mediators. Therefore, omega-3s contribute to reducing corneal epithelium irritation and supporting improved Meibomian gland function.
The combination of anti-inflammatory effects and improved lipid profile enhances tear film stability, thereby improving dry eye and maintaining a more stable ocular surface environment.
Omega-3s are nutrients that help maintain the natural moisture of the eyes.
2. Diet and its close relationship with eye health.
Studies in ophthalmic nutrition show that modern diets often contain too much omega-6 (found in refined vegetable oils and processed foods) and too little omega-3. This imbalance promotes inflammatory responses in the body, including inflammation of the lacrimal gland.
Adopting diets that prioritize whole foods and reduce sugar and processed oils helps the body absorb omega-3s more effectively. When the concentration of these fatty acids reaches optimal levels, the eyes are not only better hydrated but also more resilient to damage from blue light or environmental pollutants.
Modern diets often contain too much omega-6 (found in refined vegetable oils and processed foods) and too little omega-3.
3. How omega-3 supplements can help treat dry eyes.
Using omega-3s to help treat dry eyes needs to be done scientifically to achieve results:
Choose quality suppliers: Prioritize fatty fish such as salmon, mackerel, sardines, or other supplements with clear origins, ensuring purity and freedom from oxidation.
Appropriate dosage: To improve dry eye symptoms, the appropriate dosage of EPA and DHA is necessary. Taking too little usually does not produce a noticeable change in the tear film.
Persistence is key in treatment: Omega-3s don't produce immediate results. These fatty acids need time to accumulate in cell membranes and change the structure of the tear film. Typically, users will feel improvement after about 4 to 12 weeks of consistent use.
Combine this with a healthy lifestyle: In addition to taking omega-3s, make sure to drink enough water and take breaks for your eyes when working on a computer to support faster recovery.
Although omega-3s offer benefits, users need to be aware of several issues to ensure safety. High doses may affect those taking anticoagulants or preparing for surgery. Additionally, the quality of the supplement is also a key factor.
Dry eyes are not simply a localized problem but a symptom of nutritional deficiencies and systemic inflammation. Supplementing with omega-3s is a way to provide the building blocks for your eyes to maintain their natural moisture.
Pham Huong (source: Health & Life Newspaper)
Source: https://yte.nghean.gov.vn/tin-chuyen-nganh/vi-sao-thieu-omega-3-co-the-gay-kho-mat-1013460
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