Briefly explain any three disorders of image formation. How are they corrected ?

Three common disorders of image formation are myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. These disorders occur due to abnormalities in the way light is focused on the retina, leading to blurry or distorted vision. Fortunately, they can be corrected using various methods.

1. Myopia (Nearsightedness): In myopia, the eyeball is too long or the cornea is too steep, causing light to focus in front of the retina instead of ___ ____ __________ _____ _______ ____.
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