If Michaela needs to wear reading glasses with refractive power of +2.0 D, what is her uncorrected near point?

Neglect the distance between the glasses and the eye. Assume that the distance from the cornea-lens system to the retina is 2.1 cm and the normal near point is 25 cm.

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Related Topics : eye health reading glasses

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Answers (5)

04/12/2012

Try this link: www.firmoo.com/wrap-around-rx-sunglasses.html They have prescription sunglasses that you can afford to buy. You also can find the Eye Doctor on the www.firmoo.com and step into to get more information about the store around where you live.

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04/13/2012

I think Bifocal and multifocal contacts are available for you.They cover near and mid distance.If you are using +1.50, mid distance should not be a problem.

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04/13/2012

Uncorrected: 1/d(unc) + 1/0.021 = 1/f(eyelens) Should be corrected: 1/d(corr) + 1/0.021 = 1/f(eyelens) + 1/f(corr. lens) So 1/d(unc) = 1/d(corr) - 1/f(corr. lens) 1/d(unc) = 1/0.25 - 2.0 = 2.0 d(unc) = 0.5 m

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Austin gerard

12/10/2013

I don't know. My grandma has presbyopia. The doctor just has her eyesight checked and then gives her a piece of prescription. The optician can read the prescription and make appropriate reading glasses for them.

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walker

12/10/2013

Very bad eyesight. Why not ask your doctor when you get your prescription? I can't figure out your uncorrected near point. Mmm... I forget to ask what my uncorrected eyesight is. Next time, I will ask the doctor after having an eye exam.

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Jumpto