A close-up photograph of what appears to be a light-brown human eyeball shows the organ's expansive, cavernous depths surrounding a seemingly bottomless, black pit that, together, mimics the intricate ...

The new model mimics the structure and function of the human conjunctiva in a lab dish, even producing its own tears. When you purchase through links on our site, we may earn an affiliate commission.

Every time the human eye darts from one point to another, the retinal image smears across the visual field. These rapid jumps ...

The image shows the choroid and fovea in relation to the entire human eye. The choroid (in red) supplies blood and oxygen to the outer retina. The fovea is a dimple-like structure located at the back ...