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Thread: Cataracts

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    Senior Member Array mrina's Avatar
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    Cataracts

    Cataracts
    What is a Cataract?
    An ocular opacity, partial or complete, of one or both eyes, on or in the lens or capsule, especially an opacity impairing vision or causing blindness.
    The subsequent cloudy appearance of the eye resulted in the origin of the name cataract
    Katarak adalah sejenis kerosakan mata yang menyebabkan kanta mata berselaput dan rabun. Kanta mata menjadi keruh dan cahaya tidak dapat menembusinya. Keadaan ini menjejaskan penglihatan seseorang dan akan menjadi buta sekiranya lewat, atau tidak dirawat. Masalah katarak berbeza dengan Glaukoma yang merupakan sejenis kerosakan mata yang disebabkan oleh tekanan cecair yang terlalu tinggi di dalam bebola mata.
    Cataract Development
    The lens is made mostly of water and protein. The protein is normally arranged to let light pass through and focus on the retina.
    Protein clumps together
    Small areas of lens begin to cloud
    Light is blocked from reaching the retina and vision is impaired
    You would be able to see light and dark and maybe distinguish large objects and see movement.
    An advanced stage cataract would be something like putting sheets of wax paper over your glasses




     



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