Bi-focal lenses are designed with the upper portion as a concave lens for distant vision and the lower part as a convex lens for near vision. This design allows individuals to see clearly at both distances.
How are bi-focal lenses designed to assist individuals with both myopia and hypermetropia?
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Bifocal lenses are designed to assist individuals with both myopia and hypermetropia by incorporating two different prescriptions into a single lens. The upper part of the lens is dedicated to distance vision, addressing myopia (nearsightedness), while the lower part contains the prescription for near vision, helping with hypermetropia (farsightedness). The division between the two prescriptions is visible as a distinct line on traditional bifocals. This design allows individuals to use the appropriate part of the lens for different distances, providing a convenient solution for those who need assistance with both near and far vision without the need to switch between multiple pairs of glasses.
Bifocal lenses are designed to assist individuals with both myopia and hypermetropia by incorporating two different prescriptions into a single lens. The upper part of the lens is dedicated to distance vision, addressing myopia (nearsightedness), while the lower part contains the prescription for near vision, helping with hypermetropia (farsightedness). The division between the two prescriptions is visible as a distinct line on traditional bifocals. This design allows individuals to use the appropriate part of the lens for different distances, providing a convenient solution for those who need assistance with both near and far vision without the need to switch between multiple pairs of glasses.