Final answer:
Farsightedness, known as hyperopia, is a condition where close objects appear blurry and is corrected with a convex lens. Hyperopia is different from myopia, which affects distant vision and requires a diverging lens for correction. Corrective lenses adjust the focal point to allow for clear vision.
Step-by-step explanation:
Farsightedness and Its Correction
Farsightedness, also known as hyperopia, is a vision condition where distant objects can be seen clearly, but close objects appear blurry. This condition occurs because the eye is too short, causing light to focus behind the retina instead of on it. Hyperopia is corrected with a convex lens that is curved outward, which alters the focal point so that images are correctly projected onto the retina.
In contrast, myopia, or nearsightedness, affects people by making distant objects appear blurry, while close objects are clear. Myopia is corrected with a diverging lens to reduce the power and bring the image into proper focus on the retina. Astigmatism, another common vision issue, requires glasses with special lenses to correct the uneven curvature of the cornea or lens.
Overall, vision correction for farsightedness involves converging lenses to increase power and direct the focal point onto the retina, enabling clear vision of nearby objects.