'(<a href="http://www.j-archive.com/media/2008-12-09_DJ_11.jpg" target="_blank">Jon of the Clue Crew shows an anatomical diagram and a micrograph on the monitor.</a>)<br />The retina has a blind spot, the optic disk, where the optic nerve exits from the eyeball; it's not sensitive to light, because it doesn't have <a href="http://www.j-archive.com/media/2008-12-09_DJ_11a.jpg" target="_blank">these</a> two types of photoreceptor nerve cells found in the rest of the eye'
rods and cones
FROM THE NECK UP: <br />The retina has a blind spot, the optic disk, where the optic nerve exits from the eyeball; its not sensitive to light, because it doesnt have these two types of photoreceptor nerve cells found in the rest of the eye
<br />The retina has a blind spot, the optic disk, where the optic nerve exits from the eyeball; it's not sensitive to light, because it doesn't have these two types of photoreceptor nerve cells found in the rest of the eye
<br />The retina has a blind spot, the optic disk, where the optic nerve exits from the eyeball; it's not sensitive to light, because it doesn't have these two types of photoreceptor nerve cells found in the rest of the eye
FROM THE NECK UP
rods and cones
FROM THE NECK UP