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duechorome test

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14:54 Nov 17, 2008
English to English translations [PRO]
Medical - Biology (-tech,-chem,micro-) / ophthalmology
English term or phrase: duechorome test
If a patient is red or gereen colour blind then is it possible to do the duechrome test?
samiran sarma

Summary of reference entries provided
Jonathan MacKerron

Discussion entries: 2


Reference comments

2 mins peer agreement (net): +2
Reference: http://www.ncbi.nlm.nih.gov/pubmed/1469739

Reference information:
here's an explanation

Note added at 2 mins (2008-11-17 14:56:54 GMT)

The red-green duochrome test is based on a monocular endpoint in which each eye is tested separately. It is a subjective test that requires responses from the patient and is used to refine the spherical endpoint. Chromatic aberration, the basis of the test, occurs because different wavelengths of light are bent to a different extent. The longer wavelength (red) is refracted less than the shorter (green). If the letters on the red side stand out more, add minus power; if the letters on the green side stand out more, add plus power. Neutrality is reached when the letters on both backgrounds appear equally distinct.

Jonathan MacKerron
Native speaker of: Native in EnglishEnglish
PRO pts in category: 1

Peer comments on this reference comment (and responses from the reference poster)
agree  Gary D: explained enough
16 hrs
agree  Phong Le
1 day 9 hrs
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Changes made by editors
Nov 17, 2008 - Changes made by Steffen Walter:
LevelNon-PRO » PRO
Nov 17, 2008 - Changes made by Steffen Walter:
Field (write-in)ophthalomology » ophthalmology

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