Vitamin A and thyroid hormones shape sharp vision before birth

Scientists at Johns Hopkins University have discovered a new process that helps humans develop sharp vision before birth, according to ScienceDaily Health.

Using miniature human retinas grown in the lab, the researchers found that a vitamin A derivative and thyroid hormones collaborate to form the foveola, the small central part of the retina responsible for the sharpest vision.

This finding challenges decades of assumptions about how the eye develops, providing new insights into vision formation before birth.

The study highlights the importance of these substances in shaping the eye's ability to see clearly, potentially influencing future research on vision and eye health.