How to Use Autorefractor Keratometer ERK9200 Ezer US Ophthalmic

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Subjective Refraction Tutorial Jackson Cross Cylinder Technique. Plus cylinder refraction with phoropter. Dr. David Guyton. Source: American Academy of Ophthalmology. Table of Contents: • 00:25 Title/Intro • 00:54 History • 02:28 Subjective Refraction • 02:55 Basics of Astigmatism and Cross Cylinder Testing • 08:36 Sphere Refraction • 13:51 Cross Cylinder Testing • 22:28 Uninterrupted Refraction Example • 24:41 Duochrome Testing • 25:41 Binocular Balancing • 27:50 Vertex Distance • 29:17 Cycloplegic refraction • 30:36 Determination of Reading Add • 31:53 Documenting and Prescribing a Refraction • 32:44 Conclusion

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