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Pathophysiology : Light rays and light particles entering the eye are converged at a point posterior to the retina while accommodation is maintained in a state of relaxation. The magnitude of hyperopia is determined by the diopteric power of converging lenses required to advance the focal point of light onto the retinal plane. Treatment : Eyeglasses. The variety of eyeglasses is wide and includes bifocals, trifocals, progressive lenses and reading lenses. Contact lenses. A wide variety of contact lenses are available — hard, soft, extended wear, disposable, rigid gas permeable and bifocal. Introduction : A defect of vision caused by an imperfection in the eye (often when the eyeball is too short or the lens cannot become round enough), causing difficulty focusing on near objects, and in extreme cases causing a sufferer to be unable to focus on objects at any distance.