The Persistent Pupillary Membrane
It looks like some kind of alien parasite that has invaded this person’s pupil, but it’s actually an iris growing over a pupil. Generally speaking, a lot of people develop this condition during the fetal stage, although it usually fixes itself before they are born. But in some rare cases, this condition, known as persistent pupillary membrane, can continue after birth and it can also lead to vision problems like cloudy vision and cataracts. It’s also kind of gross.