Eyesight
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This document describes an experiment to determine how age affects the ability of the eyes to change focus between near and far distances. Younger subjects were able to switch focus more quickly with fewer mistakes than older subjects. The nine-year-old made few mistakes reading both near and far, while the fifty-one-year-old made no mistakes reading far but several reading near, suggesting a decline into near-sightedness with age. The results supported the hypothesis that older subjects would have weaker vision and more difficulty changing focus than younger subjects due to lens hardening and weakening eye muscles over time.
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The document summarizes the development of the eye and vision from conception through early childhood in humans. It describes how the eye begins forming in the 4th week of pregnancy as optic vesicles and develops layers from various tissues. After birth, the eyes continue developing, with the lens thinning and visual acuity improving over the first few years as the retina matures and coordination increases. Major developmental milestones are seeing faces at 1 month, following objects at 3 months, and normal vision being achieved by ages 2-3 years.
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This document provides information on infant vision development from birth to two years old. It discusses the development of vision abilities month by month, including the ability to track moving objects, see in depth, and develop eye-hand coordination. It also discusses common vision conditions, eye myths, signs of vision problems in infants, eye tests, and tips parents can use to support visual development at different stages.
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This document provides information about vision and eyes. It discusses how the eye is an evolutionary marvel that has developed over 40 times in different species. It then shares 20 facts about human eyes, such as their size remaining constant throughout life, their composition of over 2 million parts, and how 80% of our memories are visual. The document also briefly outlines 15 common eye diseases and conditions like astigmatism, amblyopia, and red eyes. Finally, it recommends eating a nutritious diet, quitting smoking, and taking regular breaks when using digital screens to maintain good eyesight.
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Our five senses of sight, smell, taste, touch, and hearing allow us to perceive and interact with the world around us. If one sense is lost, the others can strengthen due to increased brain activity and processing power dedicated to the remaining senses. For example, blind individuals may develop enhanced hearing and touch. The eye is a complex organ that takes in visual information which is processed by the brain. Key parts of the eye include the iris, pupil, lens, retina, and other structures that work together to focus light and send signals to the brain.
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The document provides information about the structure and function of the eye, common eye conditions such as cataracts and glaucoma, and tips for eye care including eating a healthy diet, wearing protective eyewear, and taking breaks when looking at screens. It also identifies parts of the eye like the cornea, iris, and retina and describes how vision works through the reflection of light off objects and the processing of images in the brain.
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Visual impairment including blindness refers to any impairment in vision that adversely affects educational performance, whether partial sight or blindness. Common signs that a child may have a visual impairment include eyes that don't move together, crossed eyes, frequent blinking or rubbing, and avoiding tasks requiring good vision. Types of visual impairments include strabismus, congenital cataracts, retinopathy of prematurity, and cortical visual impairment caused by damage to the brain rather than the eyes. When teaching students with visual impairments, teachers should encourage independence, communicate with students and support professionals, adapt the classroom environment and materials, and use verbal cues and the IEP for guidance.
Peds eye disoder
This document provides information about common eye disorders in children. It discusses signs of eye problems, possible eye conditions like amblyopia and strabismus, refractive errors, and ophthalmia neonatorum. Vision problems are common in young children and can affect learning if not addressed. Early diagnosis and treatment of conditions like amblyopia are important to prevent long-term vision loss.
12424498.ppt
Vision therapy aims to treat visual diagnoses that impact functional skills through targeted activities. Common diagnoses include pursuits and saccades deficits, anti-suppression issues, accommodation problems, and vergence dysfunction. "Shoe box" activities use things like word finds, mazes, and video games to treat oculomotor skills, while prisms and flashlights help with vergence. iPad apps like Doodle Find and Matrix Match can supplement traditional vision therapy. The overall goal is to improve visual skills through developmental exercises to enhance reading, mobility, and daily living.
Refractive error
Refractive error means that the shape of your eye does not bend light correctly, resulting in a blurred image. The main types of refractive errors are myopia (nearsightedness), hyperopia (farsightedness), presbyopia (loss of near vision with age), and astigmatism.
Refractive ERRORS
This document discusses different types of refractive errors of the eye including myopia, hyperopia, and astigmatism. It explains the causes and symptoms of each condition and how they are corrected either with lenses or surgery. It also provides information on homeopathic remedies that may help treat some refractive errors like myopia when accompanied by certain symptoms.
How can eyesite change ?
The eye contains several key parts that work together to allow vision. Light enters through the cornea and pupil, and is focused by the lens onto the retina. The retina contains light-sensitive cells that transmit signals to the brain via the optic nerve. Nearsightedness occurs when the eye is too long, causing images to focus in front of the retina, while farsightedness happens when the eye is too short and images focus behind the retina. These conditions can be corrected using lenses or refractive surgery like LASIK. Other eye conditions include glaucoma and cataracts.
Demo on Human Eye and their parts and detail
What is Human eyes their benefits and advantage and disadvantage
Central Vision loss.pptx
This document discusses central vision loss due to diabetic maculopathy and the rehabilitation of patients with this condition. It provides details on assessing five patients, including measuring their visual acuity, refraction, and visual fields. The document also describes low vision devices that can help patients, such as closed circuit TVs, magnifying glasses, and e-readers. Finally, it outlines the process of rehabilitating a patient with diabetic maculopathy, including evaluating their needs, developing a training plan, teaching new skills, and providing referrals to support independent living.
evaluation of strabismus
This document provides information on evaluating and examining patients with strabismus. The goals of a strabismus evaluation are to determine the cause of misalignment, assess binocular vision status, measure the deviation amount, diagnose amblyopia, and develop a treatment plan. The examination involves testing visual acuity, refractive error, ocular motility, binocular vision, and measuring the deviation. Sensory tests are used to evaluate fusion, suppression, and retinal correspondence. Motor examination includes measuring deviation amounts using cover tests and prism bars to differentiate phorias from tropias.
The Human Eye PowerPoint.pptx
The document summarizes the key structures and functions of the human eye. It describes the cornea, iris, pupil, lens, retina, optic nerve, and blind spot. It explains how the pupil controls the amount of light entering the eye and how the lens focuses light to allow vision both near and far. Common eye conditions like myopia, hyperopia, astigmatism, and cataracts are also outlined.
Defect of vision
The human eye allows us to see by forming an inverted real image on the light-sensitive retina. The main parts of the eye and their functions are: the cornea refracts light, the iris controls pupil size to regulate light, the lens focuses light onto the retina, and the retina contains light-sensitive cells that send signals to the brain for vision. The pupil regulates the amount of light entering by contracting or expanding. Common vision defects include near-sightedness, far-sightedness, and astigmatism, which can be corrected using lenses. The eye's ability to focus on near and far objects is called accommodation.
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(๐๐๐ ๐๐๐) (๐๐๐ฌ๐ฌ๐จ๐ง ๐)-๐๐ซ๐๐ฅ๐ข๐ฆ๐ฌ
๐๐ข๐ฌ๐๐ฎ๐ฌ๐ฌ ๐ญ๐ก๐ ๐๐๐ ๐๐ฎ๐ซ๐ซ๐ข๐๐ฎ๐ฅ๐ฎ๐ฆ ๐ข๐ง ๐ญ๐ก๐ ๐๐ก๐ข๐ฅ๐ข๐ฉ๐ฉ๐ข๐ง๐๐ฌ:
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๐๐ฑ๐ฉ๐ฅ๐๐ข๐ง ๐ญ๐ก๐ ๐๐๐ญ๐ฎ๐ซ๐ ๐๐ง๐ ๐๐๐จ๐ฉ๐ ๐จ๐ ๐๐ง ๐๐ง๐ญ๐ซ๐๐ฉ๐ซ๐๐ง๐๐ฎ๐ซ:
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skeleton System.pdf (skeleton system wow)
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โู
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๐๐๐๐๐๐๐๐๐๐
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2- ุชุญุชูู ุนูู 78 ุฑุณู
ุชูุถูุญู ููู ููู
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4- ูููุงูู ุจุนุถ ุงูู
ุนููู
ุงุช ุชู
ุชูุถูุญูุง ุจุดูู ุชูุตููู ุฌุฏุงู (ุชูุนุชุจุฑ ูุฏู ุงูุทุงูุจ ุฃู ุงูุทุงูุจุฉ ุจุฅููุง ู
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ุน ุฐูู ุชู
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ุนููู
ุงุช ุงูู
ูุจูู
ุฉ ุจุดูู ุชูุตููู ุฌุฏุงู
5- ุงูู
ูุฒู
ุฉ ุชุดุฑุญ ููุณูุง ุจ ููุณูุง ุจุณ ุชููู ุชุนุงู ุงูุฑุงูู
6- ุชุญุชูู ุงูู
ูุฒู
ุฉ ูู ุงูู ุณูุงูุฏ ุนูู ุฎุงุฑุทุฉ ุชุชุถู
ู ุฌู
ูุน ุชูุฑูุนุงุช ู
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ุฉ
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ุฉ ุญูุงูู ุนูููู
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ุฅู ุชุฏุนููู ุจุงูุฎูุฑ ูุงูุตุญุฉ ูุงูุนุงููุฉ ููุท
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Eyesight
- 1. Long Distance Short Distanceeyesight By: Aaliyah HIbbler
- 2. Introduction Many people may not realize it, but eyes are very sensitive.ย They adjust based on focus, light, distance, and other variables.ย How does this change when we get older?ย Does it become harder to switch between seeing things up close and seeing them far away?ย
- 3. Materials Eye Chart Paper Pencil
- 4. Objective The purpose of this experiment is to determine how age affects the speed that someone can change the focus of their eyes between near sightedness and far sightedness.ย
- 6. What is the difference between far sightedness and short sightedness?
- 7. Hyperopia Farsightedness is a vision fault caused by an imperfection in the eye (often when the eyeball is too little or when the lens canโt become round enough), causing incapability to focus on near objects, and in intense cases causing a victim to be incapable to focus on items at any distance. As an object shifts toward the eye, the eye must amplify its power to keep the image in focus on the retina. If the power of the cornea and lens is deficient, as in hyperopia, the image will come into view blurred.
- 8. Myopia Short-sightedness, is a refractive imperfection of the eye in which collimated light produces image focus in front of the retina while the eyes are relaxed. Those with myopia see nearby objects clearly but distant objects appear blurred. With myopia, the eyeball is too long, or the cornea is too steep, so images are focused in the vitreous inside the eye rather than on the retina at the back of the eye.
- 9. Experimental Procedure Find a collection of subjects willing to partake in this experiment.(Subjects from different agesโsome over 40, some in their teens, some younger than that, some over 60, etc.) Make sure that these subjects know that when they show up, they are allowed to have glasses (NOT bifocals)-They do not take the glasses off while reading something close. Direct an eye exam from a poster that is suspended far away. Give your partakers a break. Manage a second eye exam from a book that is near. Independently, make every member take an eye exam from a poster hung far away, then quickly shift to reading the book close up.ย Measure how long it takes for them to make this shift.a. In addition, count the number of mistakes made while these charts.
- 10. Hypothesis I think that the vision of the younger members will be stronger than the older. members.
- 11. Results The nine year old made four mistakes reading far and no mistakes reading near. The fifteen year old made two mistakes reading far and no mistakes reading near. The thirty-five year old made one mistakes reading far and no mistakes reading near. The fifty-one year old made no mistakes reading far and seven mistakes reading near. The seventy-five year old made five mistakes reading far and four mistakes reading near. The older the person was the more mistakes were made. This also shows the difference in the visions some members were far sighted and some were near sighted
- 13. www.google.com
- 14. www.yahoo.comThank you AALIYAH HIBBLER