Have you ever wondered why the sky is blue. Often times I find myself looking up on a clear day, pondering over that question? Why isn’t it green, or red or pink for even that matter. Every day, the human eye blinks more than 23,00 times. The human eye is a complicated organ that performs one of the most important tasks for our body. There are many questions about the eye however. What function do they perform? What happens if we don’t take care of them? How exactly do they work together to help us form images? Exactly how far can they human eye see?
The incredible thing about the human eye is that it can see objects to as far as 2 miles long.That’s almost 35 football fields! Let’s consider the mechanics of the eye. The eye is a clear ball with water-like fluids in there.You have the front of the eyeball which is translucent called the cornea. It’s extremely thin and its job is to protect the eye by refracting light that comes through. The next part of the eye is the pupil, which mostly everyone knows about.It is the black portion in your eye. Did you know that it gets its color from when light entering the eye is absorbed and it doesn’t leave the eye. You may also notice that when you’re looking at the pupil, you can see a different colored circle in them. This is called the iris, and it varies among everyone. Your actual eye color is determined by a pigment in the iris.The genes from your parents set a human’s eye color. The iris’s job is to widen or close depending on how bright or dark it is. If its bright and the sun is basically beaming down on you, the iris will adjust so your pupil will get smaller to only let a certain amount of light in. If you’re in the dark, your iris adjusts so your pupil will get bigger so a greater...
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...ork together to let us see the outside world. We can see trees, birds, electronics, and more importantly, ourselves. Human connection plays an instrumental role in our development. Human eyesight is what enables that connection between us. Personally I believe that it’s one of the most underrated,taken for granted, human organs. Although you can survive without your eyes, they give you so much life. You can see for miles and as I stated before, you can live life to the fullest more. You’re able to help more people and enjoy your life more. This is why you should do everything in might and power to protect your eyesight from any harm.
There are some limits to your vision however. You can only see so far. This is why there is a visual spectrum for us.It has about 10 limits to it.1st, a set of human eyes can only see 200 degrees horiznally and 135 degrees diagonally
The human eye requires both rods and cones for normal vision. Over 100 million rods are located in the periphery of the human eye, and about 6 million cones compose the fovea. Rods, the more sensitive of the two to light, are not able to differentiate wavelengths, thus cannot detect color, and perceive shades of grey, black, and white. Cones, on the other hand, are of three types, containing particular pigments. They are categorized as red, blue, and green depending on to which wavelength they are most sensitive. These cones are what render color vision to humans.
The eye is an important sensory organ for vision which houses a sensitive optical apparatus in a relatively isolated tissue compartment. Eye is essentially made of three layers: (1) sclera, (2) uveal tract, and (3) retina with each of these layers performing intricate duties which ensure proper functioning of the eye.
In 1802, philosopher William Paley called the eye a miracle of "design". Your eyes are responsible for 80 percent of all of the information that your brain receives. (Schleifer, 2014) But how did our eyes form? How are we able to see what we see? What allows us to see the colors we see? The eye is made up of many different complex parts that all work together to create images our brain can understand. The eye is made up of the front parts, or parts we can see, the interior parts, or parts we can’t see, the nerves which carry signals to our brain, and glands that protect our eyes. The eyes we have today have evolved over a long period of time and undergone many different changes, according to Charles Darwin, Richard Dawkins, and many other evolutionists. When all of the different parts of our eyes work together we are able to see a clear image that is produced from our brain.
The essay “Seeing with the Native Eye” exemplifies an alternative paradigm. Schriver (2011) explains “in general, alternative paradigms are sets of interrelated and interlocking dimensions through which what and how we know about the world around us is created, communicated, and controlled” (Schriver, 2011). This analysis of the essay “Seeing with the Native Eye” will be applied with the concepts that are laid out in the book Human Behavior and the Social Environment. Concepts that will be highlighted are interpretive, intuitive, subjective, and qualitative.
Myopia is a condition in which visual images come into focus in front of the retina of the eye. This condition causes objects at a distance to appear blurry, while objects nearby are seen clearly. If not severe, myopia can be treated with contacts or glasses. Other treatments for myopia include photoreactive keratectomy (PRK), LASIK, and orthokeratology. Degenerative myopia is a quick progression of myopia and leads to complete loss of vision. The treatment for degenerative myopia is a combination of medication and laser surgery.
Myopia is more commonly referred to as nearsightedness and leaves the person with the ability to see objects that are close up clearly, but those that are far away are out of focus. Hyperopia, in contrast, involves the inability to see objects that are near clearly and is often referred to as farsightedness. Objects that are far away, however, can easily be seen. As humans age, they frequently develop a condition known as presbyopia. This condition decreases the person's ability to focus sharply on those objects which are nearby and is the result of the lens of the eye hardening.
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. The blind spot is at the exit point of the optic nerve, at this point there are no rods or cones, and so all the light directed here are of no use. Eye color is created by the amount and type of pigment in the iris. Multiple genes inherited from each parent determine a person’s eye color. Though the eye is such a wonderful organ, it is also prone to diseases, infections, and other problems that could be minor or major, and could lead to blindness or poor
The pupil is merely an opening that allows light to enter into the eye. Its black color is attributed to the fact that light is not able to exit the eye through the pupil.
Optometry involves of a combination of intricate practical skills and academia allowing the improvement of an individual’s vision as an outcome changing their quality of life. I would feel privileged to gain the opportunity to study Optometry enabling me to improve the ocular health and vision of others as it would be a valuable contribution to the society.
In The Stranger, Albert Camus personifies eyes as a source of knowledge. Characters come upon knowledge through many different sources from touch to hearing. The knowledge gained through eyes can range from, self discovery to understanding events taking place. Eyes and knowledge all seem to be related to Meursault. Meursault’s ability to understand events and circumstances depends on his clarity of vision. Unlike other characters, Meursault’s eyes do not provide knowledge, thus leaving characters misunderstanding him. Characters who have blue eyes help Meursault realize a truth about himself.
and the iris which is the colored part of the eye, it regulates the amount of light
An inspection of the modern animal phyla will reveal that eyes are just as diverse as they are complex. Some organisms like the rag worm have pigmented cup eyes while other like he box jellyfish have two lens eyes and two pairs of pigment pit eyes. To account for the diversity in eye structure, we must first examine the eye ‘prototype’, the original structure that was acted upon by evolution. The simplest organ that can be considered an eye is composed of a single photoreceptor cell and a single pigment cell, without any lens or other refractive body (Arendt, 2003). Such organs are know as eyespots, and...
In “The Bluest Eye” by Toni Morrison, the audience is shown the skewed idea of beauty and how whiteness in the 1940s was the standard of beauty. This idea of beauty is still prevalent today which is why the novel is powerful and relevant. Narrated by a nine year old girl, this novel illustrates that this standard of beauty distorts the lives of black people, more specifically, black women and children. Not only was it a time when being white was considered being superior, being a black woman was even worse because even women weren’t appreciated and treated as equal back then. Set in Lorain, Ohio, this novel has a plethora of elements that parallels Toni Morrison’s personal life. The population in Lorain back then was considered to be ethnically asymmetrical, where segregation was still legal but the community was mostly integrated. Black and white children could attend the same schools and neighborhoods by then would be inhabited by a mix of black and white families. The theme of race and beauty is portrayed through the lives of three different families and stories told by the characters: Claudia, Pecola, and Frieda. Through the exploration of the families’ and character’s struggles, Morrison demonstrates the horrid nature of racism as well as the caustic temperament of the suppressed idea of white beauty on the individual, and on the society.
This reflected light passes through the lens and falls on to the retina of the eye. Here, the light induces nerve impulses that travel through the optic nerve to the brain, where it makes an image of the object, and then that image is passed on to muscles and glands.The eye is well protected. It lies within a bony socket of the skull. The eyelids guard it in front. They blink an average of once every six seconds. This washes the eye with the salty secretion from the tear, or lachrymal, glands.
Human eyes are perhaps the most crucial organs among the five body senses. Eyes serve a wide range of purpose to the human being but the most important is the fact that they are the link between an individual and his or her surroundings. A person’s self-awareness to their immediate environment is supported by the use of eyes, marking how essential they are to us. Magnificent scenes like the graceful lines of snow capped mountains, the lush prairies, the meandering rivers, the vast infinite oceans, and all other fabulous man made iconic structures, can only be aesthetically absorbed and artistically appreciated through our eyes. In addition, the entertainment content in media relayed through films and television, Internet games and books.