Monday, 3 June 2013
Seeing What’s in Your Eye
The structure of your eye is a lot like that of a traditional film camera. The lens of your eye is like the camera’s lens. Your iris is like the diaphragm, and your retina, at the very back of the eye, acts like the light-sensitive film.
However, there is a hole in your retina that lets the axons of its ganglion cells (a kind of neuron) exit the eye while letting blood vessels enter to irrigate all of the retina’s neurons. This hole creates a true “blind spot” in your field of vision. You don’t notice this blind spot in your daily life. (more…)
The Senses | Comments Closed