http://advanceforastigmatism.co.uk/a-nearsighted-person-cannot-see-objects-clearly-beyond-25-0-cm-her-far-point-if-she-has-no-astigmatism-and/ All the latest Information, deals and best offers from trusted retailers such as Amazon, Tesco & John Lewis. Making AdvanceForAstigmatism.Co.Uk the ultimate Social Shopping and price comparison site for Advance For Astigmatism. Wed, 24 Feb 2010 22:37:34 +0100 http://wordpress.org/?v=2.8.2 hourly 1 http://advanceforastigmatism.co.uk/a-nearsighted-person-cannot-see-objects-clearly-beyond-25-0-cm-her-far-point-if-she-has-no-astigmatism-and/comment-page-1/#comment-4875 kirchwey Thu, 03 Dec 2009 10:58:43 +0000 http://advanceforastigmatism.co.uk/a-nearsighted-person-cannot-see-objects-clearly-beyond-25-0-cm-her-far-point-if-she-has-no-astigmatism-and/#comment-4875 She needs a diverging lens to change her far point from 0.25 m to infinity. 1/f(corr. lens) + 1/d(uncorr) = 1/d(corr) = 1/infinity = 0 f(corr. lens) = -d(uncorr) = -0.25 m P = 1/f(corr. lens) = -4.0 diopters. She needs a diverging lens to change her far point from 0.25 m to infinity.
1/f(corr. lens) + 1/d(uncorr) = 1/d(corr) = 1/infinity = 0
f(corr. lens) = -d(uncorr) = -0.25 m
P = 1/f(corr. lens) = -4.0 diopters.

]]> http://advanceforastigmatism.co.uk/a-nearsighted-person-cannot-see-objects-clearly-beyond-25-0-cm-her-far-point-if-she-has-no-astigmatism-and/comment-page-1/#comment-4876 UByrd N Thu, 03 Dec 2009 10:58:43 +0000 http://advanceforastigmatism.co.uk/a-nearsighted-person-cannot-see-objects-clearly-beyond-25-0-cm-her-far-point-if-she-has-no-astigmatism-and/#comment-4876 6 diopetorsactions 6 diopetorsactions

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