If you are an optometry or opthalmology student, this is the perfect how-to video for you. Watch these these seven videos and learn how to test a patients vision with a refracting machine. It's a little difficult to describe the controls used for refracting because every instrument is set up differently. If possible, refer to a manual for the specific refracting instrument that you'll be using. This vision tutorial will walk you through all the parts of a optical refracting instrument, sphere establishment, cylinder axis refinement, cylinder power refinement, sphere power refinement and cylinder power search.
Use an optical refractor to test vision - Part 1 of 7
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Use an optical refractor to test vision - Part 2 of 7
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Use an optical refractor to test vision - Part 3 of 7
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Use an optical refractor to test vision - Part 4 of 7
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Use an optical refractor to test vision - Part 5 of 7
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Use an optical refractor to test vision - Part 6 of 7
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Use an optical refractor to test vision - Part 7 of 7
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Just updated your iPhone to iOS 18? You'll find a ton of hot new features for some of your most-used Apple apps. Dive in and see for yourself:
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