Part III back of the middle class to the eye is the choroid

Part III back of the middle class to the eye is the choroid, and is rich layer cardiovascular Tovralgmae of neurons at home and take them waste. It therefore colored light inside the eye will not shatter and will not be reflected (for this, if you look to the eye you will see that a black pupil because there is no reflected light from inside the eye). But if you look at your eye examination ophthalmoscope, the device illuminate the inside of the eye so you can see the entry area of the optic nerve and called this region optic disc and see arteries and veins entering and leaving him. This is important in the diagnosis of many diseases.