optic disk
optic disk
the retina contains the rods and cones which sense the amount of light and different colors respectively.
Your Retina
You can not die from a torn retina.
The retina is in the eye.
optic disk
Macula Lutea
The retina is the structure at the back of the eyeball that is filled with nerve endings.
The center region of the retina is called the macula. this is where images are focused.
macula
The region on the retina that humans and other predatory animals have where images are focused is called the fovea centralis.
Laser trabeculoplasty
There is no color until light impinges on the photosensitive nerve endings in your eye. Until then, it's just electromagnetic radiation with different wavelengths. When that radiation falls on the retina of your eye, different wavelengths produce chemical reactions in different nerve endings, and the brain interprets the signals from different nerve endings as different colors.
Macula Lutea
The fovea or fovea centralis that is a pit in the central region of the macula of the retina with a high concentration of cone photoreceptors (red, blue and green) that allows for 100% visual acuity including color vision comprises less than 1% of retinal size but takes up over 50% of the primary visual cortex in the brain.
-- The electromagnetic energy in visible light. -- The chemical energy in the food you eat that keeps your body functioning, especially the nerve endings in your retina, and your optic nerve and your brain.
because there are more rods than cones in this region