Healthy Vision

Omega-3s have long been revered for their role in heart and brain health. What many do not realize is that our eyes rely on this crucial nutrient, as well. 

Omega-3s exist in three forms: alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).

The DHA and EPA forms are the most important for visual development and retinal function. The retina is the part of the eye that receives images and sends signals to the brain about what it has seen.

DHA is found in a high concentration in the retina, which supports the hypothesis that DHA and EPA are important for visual development and retinal function. Studies suggest that the retina can degrade over time if there is not enough DHA in the diet.

Additionally, it is possible that omega-3s exert an anti-inflammatory effect in the retina. This may help to relieve inflammation that characterizes many eye disorders.

Dry eye syndrome, in particular, has been linked to low or deficient levels of DHA and EPA.

Dry eye develops commonly as we age when our eyes cannot maintain production of tears needed for health. This can be brought on by a several different reasons including exposure to a dry environment or sunlight, smoking, allergies and menopause.

Omega-3s appear to improve function in the eye’s Meibomian glands. These glands are responsible for secreting oil that coats the surface of the eye and affects how clearly we see. The National Eye Institute states that some patients with dry eye have experienced decreased irritation when supplemented with omega-3 fatty acids or dietary sources like fish.