A boy is wearing glasses and says that he cannot see the object kept at a distance without glasses. He is suffering from
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Longsightedness (or hypermetropia) is the defect due to which the eye is not able to see clearly the nearby objects though it can see the distant objects clearly because its near point is farther away from the normal near point, which is about ____ for an adult.
If the image was formed in front of the retina rather than behind the retina, then the person would need to correct the vision problem by using a:
Which of the following lenses is used to correct myopia (nearsightedness)?
The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?
A person has near point of his vision shifted to 50 cm. What lens must be used to see an object placed at 25 cm from the eye? What is the power of the lens?
A person with defective eyesight is unable to see objects clearly nearer than 1.5 m. He wants to read a book placed at a distance of 30 cm from his eyes. The type of a required lens and its focal length is
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146 videos|358 docs|249 tests
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