Practice Test | Kullabs.com
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  • The change in focal length of an eye lens to focus the image of objects at varying distances is done by the action of _______.

    pupil
    ciliary muscle
    blind spot
    retina
  • Hypermetropia is rectified by using ______.

    convex lens
    bi-focal lena
    plane lens
    concave lens
  • Myopia is rectified by using ______.

    concave lens
    plane lens
    bi-focal lena
    convex lens
  • The least distance of distinct vision for infants is ______.

    25cm - 30cm
    3cm - 6cm
    5cm - 8cm
    5cm - 10cm
  • Image is formed on ______.

    blind spot
    ciliary muscle
    retina
    pupil
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