Omega Blend supplements typically contain a combination of omega-3 and omega-6 fatty acids, such as EPA (eicosapentaenoic acid), DHA (docosahexaenoic acid), and sometimes ALA (alpha-linolenic acid). The use of omega-3 fatty acids for supporting eye health has scientific support, primarily related to the prevention and management of age-related macular degeneration (AMD) and dry eye syndrome. DHA is a major structural component of the retina, and adequate levels are necessary for optimal visual function.

Multiple observational studies have found that individuals with higher dietary intakes of omega-3s have a reduced risk of developing AMD. Some randomized controlled trials, such as the AREDS2 trial, have investigated omega-3 supplementation for AMD, with mixed but generally positive findings regarding slowing progression in certain subgroups. Additionally, omega-3 supplementation has been shown in several clinical trials to help alleviate symptoms of dry eye by supporting the function of the tear film and reducing ocular surface inflammation.

While the evidence is not universally strong (hence a rating of 3), there is a reasonable scientific basis for the use of omega-3 blends in supporting overall eye health, particularly for individuals at risk of AMD or suffering from dry eye symptoms. However, it is important to note that omega-3s are not a substitute for other established treatments or preventative measures for serious eye conditions.