The discovery could lead to new treatments for a host of degenerative diseases of the retina - based on harnessing its power, reports Express.co.uk.
In laboratory tests, human eye cells exposed to constant light withstand damage if they are supplemented with such oils.
Neuroscientist Professor Nicolas Bazan, of Louisiana State University, said, "Our findings support the proposed concept that DHA and docosanoids, molecules made in the brain at the onset of injury or disease, are responsible for activating sustained cellular mechanisms that elicit long term preconditioning protection."
Although fish oil also contains omega-6 AA, which is inflammatory and could therefore cause damage, omega-3 DHA is thought to alter the former oil's action.
The study was published in journal Cellular and Molecular Neurobiology. (ANI)