Question

# Question 26 When do we consider a person to be myopic or hypermetropic? Explain using diagrams how the defects associated with myopic and hypermetropic eye can be corrected?

Solution

## When a person is not able to see distant objects clearly but can see nearby objects clearly then his eyes are suffering from myopia or short-sightedness. This defect is caused due to enlargement of eyeball because of which the image by eyelens is formed before retina. The short-sightedness is corrected by using a concave lens, which diverges and shifts the image to the retina. Short-sighted eye with correction usng corrective concave lens. Long-sightedness or Hypermetropia is caused due to shortening of eyeball because of which the image by eyelens is formed beyond retina. Long-sightedness is corrected by using a convex lens, which converges and shifts the image to the retina. Long-sighted eye with correction using corrective convex lens. Physics

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