Why is there a curved line on some reading glasses? Class 8
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Why is there a curved line on some reading glasses? Class 8
Why is there a curved line on some reading glasses? Class 8
Answer:
Reading lenses are curved (convex) to bend light so near objects are focused on the retina. That curvature can make straight lines look slightly curved at the lens edges. This curvature is essential for correcting the vision by focusing light properly on the retina.