UC Irvine researchers reverse age-related vision loss in mice by targeting ELOVL2 aging gene

UC Irvine scientists reverse vision loss in mice by targeting the ELOVL2 gene and supplementing fatty acids, offering a new path for AMD treatment.

By: AXL Media

Published: Apr 23, 2026, 8:23 AM EDT

Source: Information for this report was sourced from ScienceDaily

A Potential Biological Reset for Aging Eyes

New research from the University of California, Irvine suggests that the gradual decline in visual acuity associated with aging may not be an irreversible process. Investigators have identified a method to potentially turn back the clock on retinal health by targeting specific metabolic pathways. According to Dorota Skowronska-Krawczyk, an associate professor at UC Irvine, the study demonstrates a significant proof-of-concept for reversing age-related vision loss. By focusing on the lipid environment of the eye, the team has shown that it is possible to restore visual performance in older subjects, providing hope for future treatments aimed at preventing conditions like age-related macular degeneration.

The Role of the ELOVL2 Gene in Ocular Decline

The research centers on the Elongation of Very Long Chain Fatty Acids Protein 2, commonly known as the ELOVL2 gene, which serves as a critical marker for the aging process. As the body ages, the activity of the enzyme produced by this gene naturally decreases, leading to a significant drop in very-long-chain polyunsaturated fatty acids within the retina. These molecules are vital for maintaining the structural and functional integrity of the eye. When ELOVL2 becomes inactive, the resulting lipid imbalance causes a measurable decline in vision, a phenomenon that researchers are now looking to counteract through direct nutritional or medical intervention.

Bypassing Natural Barriers with Lipid Therapy

In a series of experiments, researchers injected specific polyunsaturated fatty acids directly into the eyes of older mice to observe if external supplementation could compensate for diminished ELOVL2 activity. The results were striking, as the subjects showed a marked improvement in visual function. Crucially, Skowronska-Krawczyk noted that this effect was not achieved using docosahexaenoic acid, or DHA, alone. While DHA is a well-known omega-3, the study suggests that it is insufficient for restoring aging eyes on its own. Instead, a more specific class of fatty acids is required to effectively reverse the molecular signatures of aging at the cellular level.