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plano-refraction

English translation: No -(0.00 degrees of)- refractive error

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02:18 Jun 23, 2005
English to English translations [PRO]
Medical - Medical: Instruments / Implantable contact lens
English term or phrase: plano-refraction
Please see the context at:
http://www.escrs.org/eurotimes/December2003/Intracorneal_rin...

Can somebody help explain what is ¡° plano-refraction¡± and what its difference from ¡° myopic refraction difference¡±?

TIA!!!
Jianming Sun
Local time: 17:43
English translation:No -(0.00 degrees of)- refractive error
Explanation:
Refractive error, or the degree from which you do not have normal vision, is commonly measured in diopters. A diopter is often represented by a capital "D" in a prescription. No refractive error is referred to as "plano", often represented as "pl".
http://www.usaeyes.org/faq/subjects/script.htm


In patients with myopia, correction was attempted aiming for plano or reduction of the myopic refractive error to the maximum extent. By saying the result usually is over-correction, we mean there is a shift from - over plano - to +
For example high myopic refractive error is -8D, (for plano 0), but with slight over-correction (+1,2,3, etc D) in this case (+0.50 to +2.75 D),

plano 0.00 D


http://www.vision.io.csic.es/papers_pdfs/OVS_chicken.pdf

The “amplitude of accommodation” of an eye is the maximum amount that the eye’s crystalline lens can accommodate (change shape), in diopters (D). This amount is very high when young and decreases with age. The amplitude of accommodation is equivalent to the inverse (reciprocal) of the distance (“nearpoint of accommodation”) at which the emmetropic eye can focus clearly. (“Emmetropia” refers to an eye having no refractive error—not hyperopia, myopia, or astigmatism—or it can refer to the optical system of an eye corrected to “plano” (0.00 diopters of refractive error) with glasses or contact lenses.)
Selected response from:

Elena Petelos
United Kingdom
Local time: 10:43
Grading comment
Thanks!
4 KudoZ points were awarded for this answer

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Summary of answers provided
4No -(0.00 degrees of)- refractive error
Elena Petelos


  

Answers


46 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5
No -(0.00 degrees of)- refractive error


Explanation:
Refractive error, or the degree from which you do not have normal vision, is commonly measured in diopters. A diopter is often represented by a capital "D" in a prescription. No refractive error is referred to as "plano", often represented as "pl".
http://www.usaeyes.org/faq/subjects/script.htm


In patients with myopia, correction was attempted aiming for plano or reduction of the myopic refractive error to the maximum extent. By saying the result usually is over-correction, we mean there is a shift from - over plano - to +
For example high myopic refractive error is -8D, (for plano 0), but with slight over-correction (+1,2,3, etc D) in this case (+0.50 to +2.75 D),

plano 0.00 D


http://www.vision.io.csic.es/papers_pdfs/OVS_chicken.pdf

The “amplitude of accommodation” of an eye is the maximum amount that the eye’s crystalline lens can accommodate (change shape), in diopters (D). This amount is very high when young and decreases with age. The amplitude of accommodation is equivalent to the inverse (reciprocal) of the distance (“nearpoint of accommodation”) at which the emmetropic eye can focus clearly. (“Emmetropia” refers to an eye having no refractive error—not hyperopia, myopia, or astigmatism—or it can refer to the optical system of an eye corrected to “plano” (0.00 diopters of refractive error) with glasses or contact lenses.)


    Reference: http://www.tedmontgomery.com/the_eye/lens.html
Elena Petelos
United Kingdom
Local time: 10:43
Specializes in field
Native speaker of: Native in GreekGreek
PRO pts in category: 28
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