Plus Cylinder Subjective Refraction Instructional Video from my brightness is not working in laptop Watch Video

⏲ Duration: 16 min 33 sec
✓ Published: 10-Aug-2015

Description:
Slide 1nThis is Mark Wilkinson from the University of Iowa Department of Ophthalmology1 or 2?” The big surprise is that there is no absolute right answer to this question.Small variations can be found from day to day and doctor to doctor on any given patient.This is why you should show the patient the prescription change you found, if any, in a trial frame or with loose lenses held over the patient’s current glasses, so they can determine if the prescription change you found makes a fu