The importance of DHA for vision

The retina of the eye is the tissue with the highest concentration of DHA in the human body.

DHA, incorporated into the membranes of the retinal cells, plays a major role in the conversion of light signals into electrical signals.

Vision requires the participation of different tissues and anatomical structures that allow images to be captured, focused and transformed into electrical signals that are then processed in the posterior part of the brain.

This function is performed by the coordination of several tissues, namely the cornea, the lens and the vitreous body, which fills the eyeball and represents 90% of the eye’s volume. (

The formation and development of the eye begins even before the eighth week of fetal development. Research has established the essential role of omega-3 fatty acids from the earliest stages of development and throughout life in maintaining normal vision. Omega-3 fatty acids are essential components of the cell membranes of the retina, which is the most docosahexaenoic acid (DHA) dense tissue in the body and consists of a layer of light-sensitive cells lining about 65% of the inner surface of the eye onto which the lens projects images. The processing of light by the retina allows us to see in a variety of lighting conditions. The exceptional level of DHA found in the retina underlines the importance of this fatty acid in ensuring healthy vision throughout life.

Omega-3 fatty acids play an important role in eye health

The eye requires DHA for the proper development of vision in babies and young children and for the maintenance of normal vision in adults.

The European Food Safety Authority (EFSA) has approved several health claims on DHA intake in newborns and young children, as well as in the elderly.

EFSA recommends a daily intake of DHA in late pregnancy and during breastfeeding to contribute to the normal development of the eye of the foetus and breastfed infants.

Studies have shown that people who regularly eat fish and seafood are less likely to develop AMD (age-related macular degeneration) compared to those who eat little seafood. Other studies have also shown that dry eye syndrome may be relieved by marine omega-3 fatty acids.

A recent study suggests that omega-3 fatty acids may reduce eye strain symptoms associated with prolonged exposure to computer screens.

Seanova is developing formulas, with Epax high DHA products, specifically developed and tailored to meet users’ requirements for pure, safe and highly enriched DHA supplementation.

Seanova offers several EPA:DHA balanced formulas that can help support the maintenance of normal tear production, normal lubrication of the eye, thus helping to ensure comfort during prolonged computer screen use.

Astaxanthin, an ally of choice for the eyes

At Seanova, we offer astaxanthin from the micro-algae Haematococcus pluvialis. It is certified organic and, unlike other astaxanthin on the market, it comes from Europe. Astaxanthin is one of the most powerful antioxidants known to date. Its unique molecular structure allows it to insert itself into the heart of our cell membranes and exert its protective antioxidant action. This particular molecule is also capable of crossing the blood-retinal barrier and could therefore exert its beneficial effects on the eyes.

Clinical studies in humans have shown that taking 6 to 9 mg of astaxanthin per day for 4 weeks improves accommodation and reduces eye fatigue, particularly in the context of screen-induced visual fatigue. Our astaxanthin could therefore be your perfect ally in this period of teleworking!