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 3 rd layer of the eye is the iris, which looks like a pigmented disk-like tissue that can widen and close to regulate the amount of light that can enter the eye. The middle opening of the iris is called the pupil. The iris has 3 layers: the endothelium, the stroma and the epithelium.