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A person was able to read a book clearly at arm’s length but not at normal reading distance.
(a) State the defect the person suffered from?
(b) Why was he unable to read the book clearly at normal distance?
(c) How can the defect be corrected?

Answer Text:
(a) Long sightedness/hypermetropia
(b) Eye ball too short or lens are weak, unable to focus the image on the retina, eyes are unable to accommodate change in their focal length.
(c) By wearing convex or biconvex lenses or converging lenses.