clouding of the lens in the eye that affects vision. Most cataracts are related to aging. Cataracts are very common in older people. By age 80‚ more than half of all Americans either have a cataract or have had cataract surgery. A cataract can occur in either or both eyes. It cannot spread from one eye to the other. Although most cataracts are related to aging‚ there are other types of cataract: 1. Secondary cataract- Cataracts can form after surgery for other eye problems‚ such as glaucoma
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Eye Problems and Diseases Eye condition Acanthamoeba eye infections in contact lens wearers are rare but serious‚ and they often start because of improper lens handling and poor hygiene. Amblyopia also known as lazy eye‚ affects just two to three percent of the population. But‚ if left uncorrected‚ this vision problem can have a very big impact on those affected. Central vision fails to develop properly‚ usually in one eye‚ which is called amblyopic. A related condition‚ strabismus‚ sometimes
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Eagle eye From Wikipedia‚ the free encyclopedia For other uses‚ see Eagle Eye (disambiguation). Eye of a Golden Eagle The eagle eye is among the strongest in the animal kingdom‚ with an eyesight estimated at 4 to 8 times stronger than that of the average human.[1] An eagle is said to be able to spot a rabbit 2 miles (3.2 km) away.[1] Although an eagle may only weigh 10 pounds (4.5 kg)‚ its eyes are roughly the same size as those of a human.[1] As the eagle descends from the sky to attack
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Chapter 9: The Eye * Light is electromagnetic energy that is emitted in form of waves; waves crash into objects and are absorbed‚ reflected‚ scattered‚ and bent * Half of human cerebral cortex is involved with analyzing visual world * MAMMALIAN VISUAL SYSTEM: begins with eye‚ back of eye is retina (contains photoreceptors specialized to convert light energy to neural activity) * Eyes have features to track moving objects and keep transparent surface clean (i.e. by tears) *
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THE EYE. The normal sighted human eye perceives an object which is ‘described’ by light rays and how they are bent by it . Usually‚ the image of the object is picked up on the retina‚ on the area of the Central Forea as an upside down picture which is then ‘righted’ by the brain in order that the object may be seen. Different distanced objects are perceived by the eye and the lens is the part that makes this possible. Objects which are close to the eye are seen by the eyes’s lens becoming thicker
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Functioning Eye (Emmetropia)</b> <br>The eye is the organ of sight. It is used in almost everything we do‚ from playing sport to reading. A normal and well functioning eye can focus objects and images‚ both near and far‚ perceive depth and adapt to changes in light. <br> <br>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
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Eye Donation Introduction We are one of the fastest growing economies in the world today; ironically‚ we also shoulder one of the largest populations of the visually impaired. There are almost 52 million visually impaired people and 270‚000 blind children in India. That’s almost one-fourth the world’s blind population living in India. For the more academically oriented‚ as some economist pointed out‚ this could mean a cumulative loss of over $ 11.1 billion to our GNP! It is this kind of a grave
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EYE DEFECTSAND DISEASES STRABISMUS: A visual problem in which the eyes are not aligned properly and point in different directions. One eye may look straight ahead‚ while the other eye turns inward‚ outward‚ upward‚ or downward. The eye turn may be consistent‚ or it may come and go. Which eye is straight (and which is misaligned) may switch or alternate. CAUSES:With normal vision‚ both eyes aim at the same spot. The brain then combines the two pictures into a single‚ three-dimensional image
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The human eye is the organ which gives us the sense of light allowing us to learn more about the surrounding world than any of the other five senses. We use our eyes in almost everything we do whether reading‚working watching television ‚writing a letter driving a car and countless other activities The eye allows us to see and interpret the shapes‚ colors‚ and dimensions of objects in the world by processing the light they reflect of give off. Aqueous humor clear watery fluid found in the anterior
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reasonably be prevented or cured within the limits of resources likely to be made available. 2 VISION 2020 INDIA XIIth PlanTeam: Team Leader: Mr RD Thulasiraj‚ Aravind Eye Care System‚ Ms Elizabeth Kurian‚ Sightsavers International‚ Col. (Dr) Madan Deshpande‚ PBMA’s HV Desai Eye Hospital‚ Mr Paritosh Das‚ JPM Rotary Club of Cuttack Eye Hospital & Research Institute‚ Dr Asim Sil‚ Vivekananda Mission Ashram‚ Dr Rajesh Noah Overall Guidance from Dr GN Rao 1 1 1. INTRODUCTION………………………………………………………………………
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