A certain eyeglass lens is thin at its center, even thinner at its top and bottom edges, and relatively thick at its left and right edges. What defects of vision is this lens intended to correct? (i) Hyperopia for objects oriented both vertically and horizontally; (ii) myopia for objects oriented both vertically and horizontally; (iii) hyperopia for objects oriented vertically and myopia for objects oriented horizontally; (iv) hyperopia for objects oriented horizontally and myopia for objects oriented vertically.
A certain eyeglass lens is thin at its center, even thinner at its top and bottom edges, and relatively thick at its left and right edges. What defects of vision is this lens intended to correct? (i) Hyperopia for objects oriented both vertically and horizontally; (ii) myopia for objects oriented both vertically and horizontally; (iii) hyperopia for objects oriented vertically and myopia for objects oriented horizontally; (iv) hyperopia for objects oriented horizontally and myopia for objects oriented vertically.
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A certain eyeglass lens is thin at its
center, even thinner at its top and bottom edges, and relatively thick at its left and right edges. What
defects of vision is this lens intended to correct? (i) Hyperopia for objects oriented both vertically
and horizontally; (ii) myopia for objects oriented both vertically and horizontally; (iii) hyperopia for
objects oriented vertically and myopia for objects oriented horizontally; (iv) hyperopia for objects
oriented horizontally and myopia for objects oriented vertically.
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