20/20 Eye Disorder

I’ve come to understand why having access to institutions or facilities that can provide adequate sight and vision treatments is necessary. Being in America we’re blinded by an abundance of luxuries. We take the small things in life for granted and feel as if they should be handed to us with a silver spoon. What about the child in India who doesn’t have the opportunity to visit care centers to examine his or her eyes? What about the homeless and orphan children in Russia that can’t afford to see a doctor about their blurred vision? Who’s going to help out the child of the native lands that lives too far from the nearest medical care clinic but just severely injured his or her eye? All of these things are real life situations and real life problems that less developed countries face as they struggle to obtain funding or even educators who can routinely and professionally provide the necessary

As vital organ of vision, the eye, allows us to learn more about the world around us more than any other organ or senses. Sight, the physical sensory experience and vision, the metaphysical concept of how our brain interprets images both work harmoniously and play a huge role in our everyday lives. However, almost a billion people are either blind or visually impaired simply due to not having a pair of glasses. Being able to lead people in the direction of good vision is what developed my interests.

Furthermore, presbyopia can be corrected by the use of reading glasses or by holding the reading material at arms length but this student at the age of 50 knows from experience trying to hold a crochet pattern at arms length while trying to crochet just wont work. This student has chosen to use reading glasses and a bright light by the recommendation of her optometrist because a bright light will allow my light to go into the lens and a dim light will only decrease a persons ability to see and focus.

As a person ages, the constant need to accommodate when looking at nearby objects such as in reading or doing close-up work becomes more difficult (Goldstein, 2014). The main reason a person may experience the need for a brighter light when they get older is a result of a condition called presbyopia, also referred to as "old eye" (Goldstein, 2014). Old eye describes when the distance of the near point increases as a person ages. According to Goldstein (2014), "The near point for most 20-year-olds is at about 10 cm, but it increases to 14 cm by age 30, 22 cm at 40, and 100 cm at 60" (p. 25). Generally, this change occurs because the lens hardens with age and the ciliary muscles in the eye become weaker, causing great difficulty in vision when looking at objects in close range (Goldstein, 2014).

Eye Vision Inc, a long-standing medical device manufacturer, has signed a contract to sell Holland Hospital the Clear View Laser and a two-year separately priced maintenance plan for $1 million and $0.2 million respectively. On a when-and-if available bais, Eye Vision Inc. will provide software updats that is embedded with the Laser to maintainance purchasor. The software has never been sold without Laser for its functional necessity. In this memo, as explained below, we conclude that:

The perception of depth is due to having two separate eyes creating two separate images, while the ability to adapt to light change is attributed to the iris and the dilator muscles. However these two aspects of the eye are not involved in laser eye surgery and will not be discussed in reference. The focusing of objects and images is very much part of laser eye surgery. In order for a clear visual image to be formed the image must come to a point on the retina. Light rays do not

LASIK’s main advantage is in reshaping the corneal tissue (stroma) from the inside. This preserves the cornea’s sensitive top layer of cells. Formerly PRK reshaped the cornea by removing the actual surface tissue of the cornea.

We all know that having good eyesight is fundamental to driving safely. The often quoted standard for having good eyesight is the measure we know as 20/20. But what does 20/20 mean? To understand that you must look at a Snellen Chart. That’s the name of the collection of letters displayed in ever decreasing sizes on the wall chart used by Ophthalmologists and doctors’ to check your vision. The chart is named after its inventor in 1862, Dr Hermann Snellen, a Dutch Ophthalmologist.Snellen

The ten minutes prior to my PRK surgery are ones I will never forget. Initially, I was told 20/20 acuity wouldn't be attainable. However, moments before the operation, my optometrist informed me of this possibility and the risks involved due to my thin cornea. Before having PRK, I had a high degree of myopia and astigmatism. The possibility of having unaided 20/20 vision, for the first time since second grade, was one I couldn’t pass up. A week after surgery, I began noticing improvements and was astonished. Each day, my vision continued to progress as well as my appreciation for the human eyes. This moment revealed an empathetic desire to help others with vision issues and acted as a catalyst in my pursuit of optometry.

People who can see nearby objects clearly but cannot see or focus on distant objects are near sighted. This problem occurs because the lens converges the light rays to form an image in front of the retina, and by the time the light rays strike the retina the light have rays have begun spreading out again, which leads to blurry vision, and difficulty to see distant objects. A concave lens is used to diverge parallel rays enough for images to form further back, on the retina.

Main Point One: In 2017, Wachler stated that LASIK eye surgery also known, as laser-assisted in situ keratomileusis is a procedure performed to correct nearsightedness, farsightedness and/or astigmatism.

For a long time, individuals have rectified their visual perception utilizing glasses, and later on, contact lenses. For quite a while, it was trusted this was the most fantastic innovation. But it was an inconvenience for the vast majority, it was something they did, and as yet doing ordinary.

The eyelids are made up of four layers, the skin, muscle, connective tissue and conjunctiva. The process of vision occurs when light waves from an object, enter through the iris. Light then passes through the lens of the eye, a double convex structure that is used to focus the light, and then reaches the retina. Inside the retina are rods and cones. Rods are used to sense light and dark, and cones are used for sensing colors. Whether the light entering the eye hits the cones or rods, a signal is sent across the optic nerve to the brain where it is processed and viewed as an image. Some issues people have with eyesight are as follows. Those who are farsighted are unable to see things clearly at a short distance, compared to a long distance. This occurs when the light that enters the eye is focused behind the retina, and not directly onto it. When the cornea is not curved enough, this happens. Nearsightedness is when one can see objects clear at a short distance, but not at a longer distance, and this is often caused by a change in the cornea. A Blind spot is the location the optic disk, where the optic nerve fiber exits, and at this location there are no cones or rods, so there is a blind spot.

Vision challenge or impairment is when a person’s degree of seeing is very low and the affected person requires assistance in order to carry out daily routine. Significantly, for one to qualify as visually impaired there must be prove that a person cannot undertake duties by himself without necessary assistance. For a person to qualify as a visually challenged, there must be a prove that the affected eyes cannot be conventionally treated. Visual challenge cannot be corrected by surgery, refractive measures neither by medication and that is why it is termed as visual impairment. The most rampart causes of visual challenge are trauma, degenerative or congenital means and a variety of diseases. In the society,

Our eyes are vital organs because they help us visualize our surroundings. But are our eyes perfect in seeing what’s right in front of us? Sadly I learned in our evolution, nature messed up at one point and gave us blind spots in our eyes. This project shows why we have these blind spots, how to discover them, and how big they are. I researched on how our eyes see things; why when one eye is closed, the other eye sometimes can’t see what’s in front of it. I also found during my research a formula that is used to estimate the size of a human eye’s blind spot. I performed an experiment using Blind Spot Test card I made to verify the existence of blind spots in my eyes. I also collected data