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How does the vision of people with glasses compare to that of people who don't need glasses?

It depends on how bad your myopia (nearsightedness) and/or astigmatism is. [For simplicity, we can ignore presbyopia for now.] If your prescription is not at all that bad, vision with glasses is just a sharper version of what you see without them, usually with no...

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Is astigmatism temporary?

Rarely. Astigmatism is usually a permanent condition usually caused by an irregularity in the cornea of the eye. It can be found in myopic (nearsighted) forms, farsighted forms and even in mixed near- and far-sighted form. It is correctable surgically, though, in many...

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Why have humans in their evolutionary path not select out people with severe nearsightedness nor farsightedness? They did not have glasses for correction until recent times.

What a great question. You would think that saber tooth tigers or other predators would have picked off all the proto-humans before they had the chance to pass on their nearsighted genes! The fact that there are a growing number of myopes (people with...

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Can cataracts be cured without surgery?

No. If the aging of the natural lens of the eye has reached a degree of hardness and discoloration that it significantly interferes with necessary visual tasks, surgery with a lens implant is necessary. Glasses changes in the early stages will help temporarily, though....

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What do you see while you're getting an eye surgery?

You will typically see very little that you will recognize as frightening or threatening. Seeing a very bright light, perhaps a colorful light show, intermittent waves of fluid are common. You may experience some pressure from time to time, but you should not experience...

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Are there any risks in having laser corrective surgery for astigmatism and myopia?

Yes, there are. Your decision about whether to have laser vision correction should include a realistic assessment of that risk as well as the expected benefits. The most common side effect is decreased tear production ("dry eye"). This is due to the unavoidable...

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What do lights look like with astigmatism?

It depends on whether your vision problem ("refractive error" in eye doctor jargon) is purely astigmatism or if there is myopia (nearsightedness) as well. If you have pretty close to pure astigmatism, you would see a point of light (like a star...

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What are the possibilities for a person having 6/9 (20/30) vision wearing lens of -10 to get rid of glasses by correction through LASIK, etc.?

You may not be asking the right question here, although I can guess at what you mean: 1)How well will LASIK work for myopia (nearsightedness) as high as -10 Diopters?, and 2) Can I expect to get full correction of my myopia or would I have to settle for something close?...

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