What are the variables for does eye color affect a persons ability to identify colors in low light?

The primary variables in studying whether eye color affects a person's ability to identify colors in low light include the independent variable (eye color), the dependent variable (color identification ability in low light), and potential confounding variables such as age, overall vision health, and the amount of melanin in the eye, which can influence light sensitivity. Additionally, environmental factors like the specific lighting conditions and the colors being identified could also play a significant role in the outcomes.