hypermetropia

Short Sightedness and Long sightedness

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Far and near points The eye consists of a lens L and retina R where retina is light sensitive screen. Light from the objects enters the eye through the cornea. In order to be clearly seen, the image formed by the eye-lens must appear on the retina. The ciliary muscles can change the diameter of … Read more

Defects of vision

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The disorder in which a person cannot see nearby or distant objects clearly is called defect of vision. There are two most common defects of vision. They are: a)Myopia It is the defect of vision in which a person can see nearby objects clearly but cannot see distant objects. It is also called short sightedness … Read more