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Doctor insights on: How Does An Eyeglass Lens Differ From A Magnifying Glass Lens

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How does an eyeglass lens differ from a magnifying glass lens?

How does an eyeglass lens differ from a magnifying glass lens?

Very different: Eyeglass lenses can either magnify, minify (make images smaller) or correct astigmatism. Magnifying glasses are used in readers and prescription lenses for farsighted and presbyopic people, while minifying lenses are used for those with nearsightedness. Also, there can be magnification or minification with astigmatism correction at the same time. Glasses are built specifically for your vision. ...Read more

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Dr. Tim Conrad
495 doctors shared insights

Eyeglasses (Definition)

Babies sometimes need eyeglasses to correct vision or to correct ...Read more


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Heard that glass lenses for eyeglasses are somehow superior to plastic or composite lenses. Any truth to this?

Heard that glass lenses for eyeglasses are somehow superior to plastic or composite lenses. Any truth to this?

Mixed choice: Glass lenses are more resistant to scratches but they are heavier (on the nose). Plastic is lighter but tends to collect scratches. In good condition, they both provide excellent focus. ...Read more

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Can I use the glass from my old eyeglasses to my new eyeglasses?

Can I use the glass from my old eyeglasses to my new eyeglasses?

Unlikely: They would have to be a perfect match to fit into the new frame and that is unlikely. There is no harm otherwise. You could hold them in with duct tape if you don't care what they look like. ...Read more

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Getting new eyeglasses, need your opinion on plastic or glass?

Plastic: High index plastic (high prescription) higher refractive index, then thinner polycarbonate (impact resistant if monocular) glass is rare now. ...Read more

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Is there any way to fix scratched eye glass lenses?

Is there any way to fix scratched eye glass lenses?

Optical : Some scratches in plastic lenses can be buffed lightly to cover them up. Glass lenses fortunately don't have scratches as commonly but are not as treatable when they do. Go to your optical department and show them your spectacles and ask if they are able to help you. ...Read more

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What's the difference between glass and plastic glasses lenses?

See below: Differences between glass & plastic lenses: weight (glass much heavier); durability (plastic scratches more easily); price (glass generally more, depending on prescription, coatings, etc.). ...Read more

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What is the difference between glass lenses and plastic lenses for glasses?

What is the difference between glass lenses and plastic lenses for glasses?

Eye glasses : Glass lenses are heavier and more durable. Plastic lenses are lighter and scratch more easily. Both have good optical characteristics. ...Read more

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How do we return poor eye glass lenses and receive better ones ?

How do we return poor eye glass lenses and receive better ones ?

Re-examine: If you are not seeing well through your new glasses, go back to the store and have them check that they are made to prescription. If they are, get re-examined. ...Read more