Hyperopia (also called Hypermetropia or Farsightedness / Duur Drishti Dosh) is a common eye defect in which a person can see distant objects clearly but nearby objects appear blurred. It is the opposite of Myopia (Nearsightedness).
Presbyopia is a special case of hyperopia that affects almost everyone after age 40-45. The word comes from the Greek word presbys meaning 'old man'. People with presbyopia often use reading glasses.
Hyperopia occurs because the image of a nearby object forms behind the retina instead of exactly on it. This happens due to:
Hyperopia is corrected using Convex Lenses (Converging Lenses) (positive power glasses or contact lenses).
A convex lens converges the incoming light rays before they enter the eye, effectively helping the eye lens focus the image exactly on the retina instead of behind it.
Prescription: A hyperopic person's spectacle prescription will have a positive (+) power (e.g., +1.5D, +2.0D).
In **Myopia (Nearsightedness)**, the image forms in FRONT of the retina — near objects are clear, far objects are blurred. Corrected with **concave (negative) lenses**. In **Hyperopia (Farsightedness)**, the image forms BEHIND the retina — far objects are clear, near objects are blurred. Corrected with **convex (positive) lenses**.
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