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People might need eyeglasses for vision correction, reading, aesthetics, safety or sun protection. Eyeglasses might be supported by pads on the bridge of the nose and by temples over the ears. Lenses on eyeglasses might be made of plastic due to the danger of breakage and greater weight of glass lenses. Some plastics might have more useful optical properties than glass like better transmission of visible light and greater absorption of ultra light. Plastic lenses might have a better chance of correcting vision abnormalities like nearsighted and farsighted. Eyeglasses might be available with flexible frames that might bend without breaking or request scratch-resistant lenses.
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