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  • Structure Of Penguins Eyes
    1,072 words
    Myopic little men in tuxedos, or highly efficient land / water animals? Recent research indicates there's more to penguins than meets the eye. If you " ve every wondered what it would be like to be able to see as clearly under water as you canon land, just ask the nearest penguin. Most aquatic animals are short-sighted on land. Most terrestrial animals (and that includes us) are far-sighted underwater. But researchers have discovered that penguins can apparently see equally well in both environm...
  • External Auditory Canal And The Middle Ear
    995 words
    Goff Margaret Jenkins General psychology 7/11/04 Structures of the eye and ear We use our ears for the hearing sense, and we use our eyes for vision. Both are very important senses and would be hard to get along without. We rely on hearing for communication, navigation, entertainment and many other purposes Now for our eyes we use them for vision, their like our own personal camera's, both have and use lens to focus on images. The eyes respond to the visible spectrum, this spectrum is made up of...
  • Close To The Eyes The Lens
    2,270 words
    The Human Eye The Eye is the organ of that you gives your sight. Eyes enable people to perform tasks and to learn about the world that around them. Sight, or vision, is a rapidly occurring process that involves interaction between the eye the nervous system and the brain. When someone looks at an object, what he / she is really seeing is the light that the object reflects, or gives off. This reflected light passes through the lens and falls on to the retina of the eye. Here, the light induces ne...
  • Disposable Contact Lens Use Disposable Contact Lenses
    2,828 words
    Introduction The last 20 years has seen a tremendous increase in the use of contact lenses. Despite the recent trend towards fashionable eyewear and the advances in refractive surgeries, there are still approximately 1 million Australians who are currently wearing contact lenses. This is partly because of the variety of lens materials, replacement schedules, specialty designs, and convenient contact lens care systems available today. While there are many benefits of contact lenses, both cosmetic...
  • Laser Eye Surgery Known As Lasik
    1,267 words
    I would like to ask a question. By a show of hands, how many people here use some form of corrective eyewear; glasses or contact lenses? (results) Wouldn! |t it be wonderful if in fifteen minutes you could have a painless procedure that would allow you to throwaway your glasses or contacts. Wouldn! |t it be wonderful if this miracle procedure only cost you eighty-nine dollars a month for one year. Imagine going to the beach, going to parties, waking up in the morning without having to fuss with ...
  • Light Rays From Distant Objects
    1,493 words
    Shape. Colour. Depth. Brightness. Distance. Which single organ in the human body allows one to perceive these entities? The human eye. The eye is the most important organ in discovering the world around us. Although the eye measures only 2.5 centimeters in diameter, it can see as far away as a star and as tiny as a grain of sand. It can quickly adjust its focus between distant and near points, even while the head is moving. We use our eyes in everything we do- from reading and working to watchin...

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