Macushield supports and maintains eye health this formula combines powerful antioxidants that help protect eye tissues from blue light and free radicals it is designed specially to support macular health throughout our later years meso zeaxanthin meso zeaxanthin is not found in a typical diet although it is found in unusual foods such as shrimps and oysters but is uniquely important for macular health the body normally converts lutein to meso zeaxanthin in the retina meso zeaxan