Color vision may be affected by high blood pressure

Japanese researchers may have discovered a link between high blood pressure and impaired color vision. Saitama Medical University researchers in Japan studied the relationship between color vision, eye disease, heart-related risk factors and lifestyle habits among 872 men between the ages of 20 and 60 years who were on active duty in the Japanese Self Defense Force in Kyoto. The medical records of the men were evaluated, their blood pressure was measured and color vision tests were administered. What the researchers discovered after accounting for other factors, was that as blood pressure readings got higher, so did the likelihood of impaired color vision. The study couldn't definitively prove that high blood pressure caused the impaired color vision but the study findings will be helpful for future studies.*