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Doctor insights on: Do Diopters Measure Nearsightedness

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Do diopters measure nearsightedness?

Do diopters measure nearsightedness?

Yes: Nearsighted eyeglass (or contact) correction will be denoted on the prescription as a (-) power and a number (e.g. -2.75) which would be a nearsighted person with a power of minus 2.75 diopters. ...Read more

Diopter (Definition)

The diopter is a term used in optics to measure the ability of a lens or mirror to bend light (one diopter is the displacement of one cm at a distance of one meter). Eyeglasses and mirrors are measured in this unit. It is not the snellen fraction (20/20 ...Read more


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What diopter goggles should I get if nearsighted?

What diopter goggles should I get if nearsighted?

Same as glasses: If you know you are nearsighted, you probably have a prescription for eyeglasses. Goggles will be made for you of the same approximate power. ...Read more

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How can I identify whether I have axial or pseudo-myopia? Is pseudo-myopia is restricted upto some power(diopter)?

How can I identify whether I have axial or pseudo-myopia? Is pseudo-myopia is restricted upto some power(diopter)?

Eye exam will tell.: Axial myopia: eye length is too long for distance light rays to be focused on retina. Other common cause of this is a cornea that is too curved + over focuses the rays short of the retina. Pseudo myopia likely refers to a spasm of the inner lens over focusing the rays - detectable with drops that paralyze focusing muscle. No limit to level of myopia. ...Read more

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How severe is -3 diopter astigmatism and -8 diopter myopia?

How severe is -3 diopter astigmatism and -8 diopter myopia?

Myopia: Nearsightedness or myopia is very common. It is not uncommon for us to see patients who are -10 diopters or more. Be sure you have a dilated retinal exam every year and you know what retinal detachment signs look like (burst of black floaters, flashing lights, new floaters, curtain coming down over your vision); consider polycarbonate glasses for protection especially during sports. ...Read more

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How to stop the progression of myopia? I'm 28 years old, male, office work, -7 diopters with astigmatism

Little needed: At your age, myopia has run its course and there is little likelihood of further changes. You might be a good candidate for lasik as things have stabilized and the results should be good. ...Read more

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Any risk in a myopic pregnant woman (-8 diopters) getting retinal detachment from pushing during delivery?

No: Although the risk of retinal detachment may be somewhat higher in a high myope (near-sighted person), I do not believe that delivery poses much of an increased risk. Enjoy the baby! ...Read more

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What is the distance to measure nearsightedness at, and why?

20 feet: All lanes are corrected for distance to be equivalent to 20 feet which is the defined standard. In metric countries it is 6 meters. The snellen fraction 20/ over something, uses the 20 foot standard as part of the fraction. It is arbitrary but since a universal standard was needed for the optical industry, in the usa 20 feet is adopted for all to measure by. ...Read more

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Can you guys tell me how big a deal is -0.5 diopters to mis-measure?

Can you guys tell me how big a deal is -0.5 diopters to mis-measure?

Minor: This is easily within the range that your eye can adjust to it and measurement of optical strength can include at + or - factor of 0.5 easily since the measurement is subjective. So it is not a big deal. ...Read more

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My vision seems fuzzy lately. Can nearsightedness show up in your 30's?

My vision seems fuzzy lately.  Can nearsightedness show up in your 30's?

Yes,other causes too: Yes, myopia (near-sightedness) can show up in the 30's, although usually will appear earlier. There are many other possible causes for "fuzzy" vision, and you should be examined by an ophthalmologist to find the reason. ...Read more

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How do you fix nearsightedness?

Glasses, contacts : Near sighted people see better up close without glasses, and need glasses for distance vision. Glasses, contact lenses and surgery can be used to help a near sighted person see better. ...Read more

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What is myopia (nearsightedness)?

Trouble Seeing Far: Myopia occurs in many people and means you have problems seeing far away but usually don't have trouble reading or seeing things closer to you. Typically it can't be prevented and occurs when the eye becomes a bit more oval or longer in shape. Any changes in vision should be evaluated by a doctor to be sure that it's not something more severe or dangerous. For example, diabetes can affect vision. ...Read more

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How can I tell if i'm nearsighted?

How can I tell if i'm nearsighted?

Easy: Things up close will be clearer than those far away when optical correction (glasses or contacts) is absent. ...Read more

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Is there a way to cure nearsightedness?

Is there a way to cure nearsightedness?

Yes: Nearsightedness, myopia , can be treated with glasses, context lenses or lasik surgery . You need a n eye exam to determine the power needed to make you see better. Lasik involves measurement to determine if you are a good candidate for this. ...Read more

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Could nearsightedness lead to longsightedness?

Could nearsightedness lead to longsightedness?

No : What happens as one approaches middle age is the focusing power of your eye declines. So that people, even nearsighted ones, can have difficulty focusing at objects up close. This is called presbyopia. It is often confused with developing farsightedness--but the 2 conditions are different. ...Read more

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What is it that makes a person's nearsightedness worse?

What is it that makes a person's nearsightedness worse?

Myopia: Or nearsightedness is programmed in arson genetic make-up. There is nothing that can permanently slow down the process of nearsightedness. The important thing is that you vision is corrected to the best it can be so you can function.. ...Read more

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I have an l = 75 & r = 125 vision. Is this a nearsighted vision, what to do?

Get glasses: I am guessing you mean left is -0.75 and right is -1.25 which are the lens powers to correct your relatively minor degree of nearsightedness. If you want visual clarity you should get glasses or contacts to correct this. If these refer to something else, then rephrase the question please. ...Read more

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Can nearsightedness cause lightheadedness?

Can nearsightedness cause lightheadedness?

Nearsightness: Is some cases when you are staring at something for long periods of time, it can cause lightheadedness. Nearsightedness will also cause headaches if not corrected. See you eye doctor to get your eyes checked and corrective lenses fit to your vision levels. Good luck and feel better. ...Read more

Dr. Tim Conrad
269 doctors shared insights

Holding Objects Closer To Read (Definition)

Nearsightedness is a symptom where a person has trouble seeing clearing faraway objects. ...Read more