Visual acuity

The retinal pigment epithelium (RPE) is very a important part of the eye; It is responsible for absorption of scattered light, the visual cycle and phagocytosis of photoreceptor outer segment membranes. The protein RPE65 is normally abundantly made in the RPE, unless there is a mutation in the RPE65 gene, caused by a deletion of 4 base pairs. This deletion causes a frame shift and also an early stop on the protein, so the protein is shorter and does not function properly. The mutated gene is…

The visual system is extremely important in the human body. Though not essential to life, it allows people to monitor and process the world around them much more easily. The visual system is responsible for allowing people to not only see objects but also see those objects in color, be able to determine if they are moving, and even establish distance. Although the idea of vision seems simple at first, it is a very complex process made up of many minute parts. The eye is often compared to a…

1) People who have a static disability that is not expected to worsen may be certified through a process referred to as a Statement of Demonstrable Ability (SODA). You may be able to get your vision test arranged so that you are tested on if you can differentiate airport lighting and ATC light signals. 2) 14 CFR 91.17(a)(3) says you must refrain from acting as pilot, or required crew member while on a medication, and until you no longer have symptoms. You can first ask yourself if this…

Do you like being blind? I know that I do not find it enjoyable. This is the reason why I decided that I wanted to become an optometrist. Ever since I starting wearing glasses in the fourth grade, my life has become a little more difficult without them. So now, I have decided that I will help others with the same problem. It does not hurt that with more technology coming out, and kids playing on them more that the kids’ eyes will worsen. 1. When I become an optometrist, my job will be to help…

Chapter 6 deals with how individuals perceive depth once again this is going to be different for everyone and every eye. This essay will reflect on many of my own thoughts and questions that pertain to this chapter. To begin with I find it interesting that ciliary muscles in and around our eye help to determine our depth. Other cues that exist determine our depth is the monocular and binocular cues. I find these two cues difficult to understand. What exactly is a monocular cue? What exactly is…

Researchers have shown that people who exercise would have a less chance of damaging their vision. One example of eye damage is called glaucoma. Glaucoma is a disease which blinds people and usually starts occurring at the age of 40. So far there aren’t any cures for this, but there is treatment that can slow down the process of one becoming blind. Certain types of lifestyles that can affect eye pressure, which is a factor towards the disease. The connection between exercise and glaucoma…

The rods and cones are two types of photoreceptors in the human retina. The retina is a tissue lining inside of the eye that absorbs light, processes images, and sends visual information to the brain. There are millions of receptor cells in the retina that control the sensitivity to light. The rods and cones are two types of receptors that are found in the retina. They both play an important significant to the luminosity humans use to see. When light is passed through the eye, rods and cones are…

1. Read the pages listed above. Begin your writing by asking 2 specific ‘types’ of questions about the content of the reading. Write down the ‘type’ of questions (below) you are asking AND write down the questions themselves. a. The book states that art collecting “attracted those who used art as a status symbol, proclaiming their wealth and social prestige and personal taste” Linda, Weintraub. In The Making: Creative options for contemporary Art, pg. 11. Today art is still used by some as…

Blurred Vision Having blurred vision means you cannot see things clearly. Your vision may seem fuzzy or out of focus. Blurred vision is a very common symptom of an eye or vision problem. Blurred vision is often a gradual blur that occurs in one or both eyes. There are many causes of blurred vision, including cataracts, macular degeneration, and diabetic retinopathy. Blurred vision can be diagnosed based on your symptoms and a physical exam. Make sure to tell your health care provider about any…

For a person that has never lived with a physical challenge such as being blind, deaf, or wheelchair bound it is very eye opening experience to the struggles that many have to deal with on a daily basis. I chose to try and function without sight for four hours to see if I could manage. I have worked in the past with those that have been blind for many years and I must say they were very self sufficient with one gentleman even walking several blocks to work each day unassisted. What I found when…