Blue Tarantulas. In a way itâs a shame that most people think of the standard Chile Rose Haired and the Curly Haired spiders when they think of tarantulas because many people think that all tarantulas are a boring brown color. Of course this couldnât be further from the truth and if you know what species to look [â¦]
Answer: The black dot in your eye is called a pupil, it contracts and widens to regulate the amount of light entering the eye. It is really just a hole in the center of yo â¦ ur eye that allows light to pass through, that is really it. + 6 others found this useful. Sharon Robinson.
The eye is a slightly asymmetrical globe, about an inch in diameter. Just behind the iris and pupil lies the lens, which helps to focus light on the back of the eye. Most of the eye is filled with a clear gel called the vitreous. Light projects through the pupil and the lens to the back of the eye. The inside lining of the eye is covered by special light-sensing cells that are collectively called the retina. The retina converts light into electrical impulses. Behind the eye, the optic nerve carries these impulses to the brain. The macula is a small extra-sensitive area within the retina that gives central vision. It is located in the center of the retina and contains the fovea, a small depression or pit at the center of the macula that gives the clearest vision. Eye color is created by the amount and type of pigment in the iris.