This study used both a prospective cohort study and Mendelian randomization (MR) to investigate whether omega-3 fatty acids protect against age-related macular degeneration (AMD). The cohort study, involving 258,350 participants from the UK Biobank, found that higher plasma levels of omega-3 and DHA were associated with a lower risk of developing AMD. MR analyses further suggested a causal link between a genetic predisposition to higher omega-3 and DHA levels and a reduced risk of both dry and wet AMD. The authors conclude that these findings support the need for clinical trials to assess the effectiveness of omega-3 fatty acids in preventing and treating AMD.

This research highlights the connection between retinal ischemic perivascular lesions (RIPLs), observed through noninvasive eye imaging (OCT/OCTA), and single subcortical infarction (SSI), a type of stroke. The study found that the presence of RIPLs is independently associated with SSI and correlates with a higher burden of cerebral small vessel disease in SSI patients, including increased white matter lesions and enlarged perivascular spaces in the brain. Additionally, eyes with RIPLs showed lower blood vessel density in a specific layer of the retina. These findings suggest that RIPLs could serve as a readily detectable marker of both retinal and cerebral ischemia, potentially aiding in the early identification of individuals at risk for or affected by small vessel disease in the brain.