Did you know that the human eyes have 130 million rods that detect light in low-level conditions but don’t perceive color or fine details?
There are 7 other million cones that cluster in the middle of the retina. When either fails, people lose sight in all or part of the visible spectrum.
Good news: In a recent study adult male squirrel monkeys, with gene-therapy, were able to gain their vision. This brings hope to those who have congenital vision disorders for both adults and children.