What Does It Mean To Be Corrected
UNIVERSITY OF LAGOS, COLLEGE OF MEDICINE, IDI-ARABA, LAGOS DEPARTMENT OF BIOMEDICAL ENGINEERING
A PROJECT WORK ON WEARABLE OBSTACLE SENSOR FOR VISUALLY IMPAIRED
By
OGUNSANYA, ABIODUN OLAYINKA (139099011) & OKOI, OMINI EYONG (139099007)
SUMITTED TO THE DEPARTMENT OF BIOMEDICAL ENGINEERING, FACULTY OF BASIC MEDICAL SCIENCE, COLLEGE OF MEDICINE, IDI-ARABA, LAGOS
IN PARTIAL FUFILLMENT OF THE REQUIREMENTS FOR DEGREE OF MASTER OF SCIENCE (M Sc. Hon) IN BIOMEDICAL
…show more content…
Visual information is the basis for most navigational tasks, so visually impaired individuals are at disadvantage due to the lack of sufficient information about their surrounding environment. With recent advances in inclusive technology it is possible to extend the support given to people with visual disabilities in terms of their mobility. Visual impairment is one of the most common disabilities worldwide. WHO estimated around 39 million blind people, the largest number of visually impaired people falls into the senior citizen category; in fact 82% of people with impaired vision are over 50 year and above. Globally, uncorrected refractive errors are the main cause of moderate and severe visual impairment; cataracts remain the leading cause of blindness in middle and low income countries. The number of people visually impaired from infectious diseases has reduced in the last 20 years according to global estimates work. 80% of all visual impairment can be prevented or cured [4]. The following terms are used to describe the different levels of visual …show more content…
The human eye is a slightly asymmetrical globe, very complex and truly amazing organ. It is approximately 2.54cm wide and deep, and 2.286cm tall. Human eyes allow humans to appreciate all the beauty of the world they live in, to read and gain knowledge, and to communicate their thoughts and desires to each other through visual expression and visual arts. The human eye is wrapped in three layers of tissue: the external layer, formed by the sclera and cornea; the intermediate layer, divided into two parts: (anterior and posterior) and the internal layer or the sensory part of the eye, the retina [10].
Figure 1: Diagram of Human Eye with Major Structures [10]
2.1 GENERAL DESCRIPTION OF THE MAJOR STRUCTURES OF THE HUMAN EYE
Sclera
The sclera is the tough, outermost layer of the eye. The white membrane of the sclera maintains the shape of the eye.
Cornea
The cornea is a transparent structure located at the very front of the eye that helps to focus incoming light. The moist and dust-free cornea admits light to the interior of the eye and bends the light rays to that they can be brought to a focus.
Summary Of Chapter 8 And 9 Of Your Inner Fish
746 Words | 3 PagesThere is a stunning variety of photoreceptor organs, but every animal uses the same kind of light-capturing molecule called an opsin. Insects, humans, and clams all use opsins and the history of human eyes can be traced through differences in the structure of these molecules. The structure of opsins is similar to parts of certain molecules in bacteria. The precise molecular similarities in this molecule suggest a shared history with bacteria. Modified pieces of ancient bacteria lie inside human retinas, helping people to see.
Stereo Sue Summary
943 Words | 4 PagesWhen reading Stereo Sue by Oliver Sack in 2006, I realized how important our vision is in multiple ways. The memory of a close friend that passed a few years ago continued to come to mind. My friend named Bill Vickery lost his vision after a surgery on his optic nerve where the nerve was beyond repair and completely damaged. Shortly after his surgery and the loss of sight be started to fall into depression and I was able to see he really needed some help.
Cross Country Skiing Case Study
1584 Words | 7 PagesThe main cause of the injury to the cornea is the incomplete eyelid closures and the damaged blinking reflex. Consequently, the thin cornea film that covers and protects it is not kept in
Summary Of A Cure In Sight By David Dobbs
467 Words | 2 PagesIn order to reverse or prevent some types of eye damage, variations of gene-replacement, or the identifying a mutation that cripples retinas and fixing the problem by slipping a good copy of genes into the eye, could find, or even fix similar genetic defects early on. In addition to gene-replacement, stem cells, or cells in early stage of development, replace or reduce the failing retinal cells that cause blindness. Dobbs also talks about bionic retinas, or microchips that replace failed retinal cells by collecting or amplifying light. They bring a low-resolution version of sight to people with histories of blindness.
Blindness In Oedipus The King And Young Goodman Brown
1833 Words | 8 PagesWhen blindness is referenced the first thought that comes up is the actual disability. Blindness doesn’t always come in the form of a physical impairment but can often times have a figurative meaning. Sophocles, J.C. Oates and Nathaniel Hawthorne demonstrate this act of figuratively referencing blindness in “Oedipus the King,” Where Are You Going, Where Have You Been” and “Young Goodman Brown.” Although some may say that the truth will set you free, for the characters in these stories it decides their fates. The story of “Oedipus the King,” tells a tale of the great ruler of Thebes who has become the culprit of a plaque that is among the city.
Franklin Delano Roosevelt's Social Security Policy During The Great Depression
923 Words | 4 PagesSocial security Board considers blindness as visual acuity of 20/200 or less in the best functioning eye with use of a corrective lens. However, if an individual does not meet the specific requirements if blindness but still has a vision impairment, they may still receive benefits from SSI under disabled people’s
Cow Eye Dissection Lab Report
199 Words | 1 PagesThere are many parts of the eye that all play a part in helping us see. The parts we will be examining are the cornea, sclera, optic nerve, iris, lens, pupil, ciliary body, and aqueous humor. Materials: Gloves Cow eye Warm water Paper towel Dissection pan Scalpel Scissors Probe Procedure: Get gloves. Get the cow eye.
African American Blindness
961 Words | 4 PagesKevin Mc Kinney from the American academy of ophthalmology acknowledge that it exists different types of glaucoma and categorize them as follow: “1) Primary open angle glaucoma: this is the most common form of glaucoma. It occurs when the trabecular meshwork of the eye gradually becomes less efficient at draining fluid. 2) Normal tension glaucoma: that type of glaucoma arises even though the pressure in the eye is normal, but the optic nerve is damaged.3) Angle closure glaucoma: also called narrow angle glaucoma. It occurs when someone’s iris is very close to the drainage angle in their eye.
African American Blindness
1041 Words | 5 PagesIntroduction Vision is one of our most valuable sensory modalities, it is the way that we as individuals identify our surroundings and ourselves. African American children at a young age are more susceptible to having eye problems mainly because of the fact that they are still children and still exploring their surroundings. It is estimated that around 500,000 children become blind each year but that number is expected to grow. In developing countries that statistic is even worse as around 60 percent of individuals die within a year of becoming blinded (NIH, et al, 2015). This brings about the question as to what are the true causes of these blindness’s
Blindness In Barbara Kingsolver's The Bean Trees
590 Words | 3 PagesThe history of blindness came from a time where it was difficult to even keep someone around that was blind. People were giving away their children, abandon them, leaving them to die (Omvig 2017). As shocking as it is, of course everyone is scared of the unknown, this was not very common and seeing someone who was blind was a whole new thing. Once it became a very common
Anatomical Differences
202 Words | 1 PagesThere are several anatomical and physiological differences between the rabbit eye and the human eye. One difference is the presence of a nictitating membrane, or third eyelid, in the rabbit. As this membrane slides horizontally across the eye, it is proposed that it aids removing and/or excluding irritating substances from the corneal surface. Another difference is the larger conjunctival sac in the rabbit, which allows for larger test volumes to be instilled, perhaps more than could be accounted for on accidental exposure. The rabbit cornea is thinner than that found in humans, and rabbits tend to have less tear production.
Stevie Wonder Research Paper
1286 Words | 6 Pages(White 20). If a sighted person is not able to be with blinds, then scientist are coming up with a signaled headband device
Theme Of Blindness In Oedipus The King
700 Words | 3 PagesAppearance can be misleading, the obvious things we see are not always how things are in real. In Oedipus the King, Sophocle exposes the trick of nature which is "what we see is not what is intended to be" and which turned to be a situational irony in the play, Oedipus the king. Blindness is not only apply to people who are blind.
Essay On Assistive Technology
720 Words | 3 PagesAccessibility is a concept that essentially applies to the customization of products, services, appliances and environments in a way that enables them to be used by people who have various types of disabilities. Effectively speaking, these products and services are designed in such a manner that enables people with special needs to gain both ‘direct’ as well as ‘indirect’ access to them. At the same time, the benefits of accessibility also extend to a wider category of individuals such as senior citizens and medical patients. Assistive technology is a term that is closely associated with the concept of accessibility. For instance, the application of assistive technology is what makes electronic equipment such as computer screen readers accessible to all categories of end users, including those with disabilities or special needs.
Essay On Disabled People
1333 Words | 6 PagesDisabled people are people who have mental or physical limitation so they depend on someone to support them in doing their daily life needs and jobs. Although disabled people are a minority and they are normally ignored, they are still a part of the society. The statistics show that the proportion of disabled people in the world rose from 10 percent in the seventies of the last century to 15 percent so far. The number of handicapped exceeds a billion people all over the world, occupied about 15 percent of the world's population, as a result of an aging population and the increase in chronic conditions such as diabetes, heart disease, blood and psychological diseases that are related with disabilities and impairments. Every five seconds someone
More about What Does It Mean To Be Corrected
Summary Of Chapter 8 And 9 Of Your Inner Fish
746 Words | 3 PagesStereo Sue Summary
943 Words | 4 PagesCross Country Skiing Case Study
1584 Words | 7 PagesSummary Of A Cure In Sight By David Dobbs
467 Words | 2 PagesBlindness In Oedipus The King And Young Goodman Brown
1833 Words | 8 PagesFranklin Delano Roosevelt's Social Security Policy During The Great Depression
923 Words | 4 PagesCow Eye Dissection Lab Report
199 Words | 1 PagesAfrican American Blindness
961 Words | 4 PagesAfrican American Blindness
1041 Words | 5 PagesBlindness In Barbara Kingsolver's The Bean Trees
590 Words | 3 PagesAnatomical Differences
202 Words | 1 PagesStevie Wonder Research Paper
1286 Words | 6 PagesTheme Of Blindness In Oedipus The King
700 Words | 3 PagesEssay On Assistive Technology
720 Words | 3 PagesEssay On Disabled People
1333 Words | 6 Pages