A Subjective Method Of Refraction Employing The Cobalt Blue Glass
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A Subjective Method Of Refraction Employing The Cobalt Blue Glass
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Author : Joseph A. Svagdys
language : en
Publisher:
Release Date : 1960
A Subjective Method Of Refraction Employing The Cobalt Blue Glass written by Joseph A. Svagdys and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960 with Dissertations, Academic categories.
Subjective Refraction And Prescribing Glasses
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Author : Richard J. Kolker
language : en
Publisher:
Release Date : 2015-11-01
Subjective Refraction And Prescribing Glasses written by Richard J. Kolker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-11-01 with categories.
Subjective Refraction and Prescribing Glasses is an essential guide for everyone refracting patients, from the novice to the experienced. It presents refraction in a clear and accessible manner, with emphasis on the practical.
Investigation Of A New Method Of Subjective Refraction
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Author : Lary G. McAtee
language : en
Publisher:
Release Date : 1957
Investigation Of A New Method Of Subjective Refraction written by Lary G. McAtee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1957 with Eye categories.
Refraction And How To Refract
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Author : James Thorington
language : en
Publisher:
Release Date : 1904
Refraction And How To Refract written by James Thorington and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1904 with Eye categories.
Refraction And How To Refract
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Author : James Thorington
language : en
Publisher:
Release Date : 1907
Refraction And How To Refract written by James Thorington and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1907 with categories.
Refraction And How To Refract
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Author : James Thorington
language : en
Publisher:
Release Date : 1902
Refraction And How To Refract written by James Thorington and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1902 with Eye categories.
Subjective Methods Of Determining The Refraction Of The Eye At Distance
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Author : Robert J. Saul
language : en
Publisher:
Release Date : 1954
Subjective Methods Of Determining The Refraction Of The Eye At Distance written by Robert J. Saul and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with Dissertations, Academic categories.
Refraction Of The Human Eye And Methods Of Estimating The Refraction
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Author : James Thorington
language : en
Publisher:
Release Date : 1947
Refraction Of The Human Eye And Methods Of Estimating The Refraction written by James Thorington and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1947 with Eye categories.
New Method Of Subjective Refraction Involving Identical Technics In Static And Dynamic Tests
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Author : Matthew Luckiesh
language : en
Publisher:
Release Date : 1940
New Method Of Subjective Refraction Involving Identical Technics In Static And Dynamic Tests written by Matthew Luckiesh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1940 with categories.
Two Alternate Refraction Methods That Use A Scheiner S Disc And Stenopaic Slit
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Author : Chad Hollifield
language : en
Publisher:
Release Date : 2016
Two Alternate Refraction Methods That Use A Scheiner S Disc And Stenopaic Slit written by Chad Hollifield and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Eye categories.
Purpose. Subjective refraction procedures using a Jackson Cross Cylinder and blur interpretation are well established, but other less known and rarely used methods exist. Our purpose was to assess two alternate methods for possible advantages relative to traditional subjective refraction. Methods. Method1 used a simple stenopaic slit to find the major meridians and then a Scheiner’s disc to measure their refractive powers. Method2 used a modified Scheiner’s disc overlaid with Fresnel prisms to measure power in each meridian. Both methods measured separate samples of 20 eyes, and their results were compared to standard subjective refractions. We evaluated agreement with standard refraction as well as visual acuity and utility of each method. Results. The mean power difference (power vector magnitude) between Method1 and subjective refraction was 0.39 D. Mean axis difference was 2.3°. Average visual acuity was not significantly different. The corresponding results for Method2 were 1.65 D, 9.2° and visual acuity was 0.27 logMAR (approximately 3 lines) worse. Conclusions. Results for Method1 indicated close agreement with standard subjective refraction, but was harder for some subjects to understand. It could be a viable alternative when standard refraction is unreliable. Method2 showed poor agreement and significantly worse visual acuity. In its current stage of development, it is not a viable alternative to standard subjective refraction.