I do prefer to make my own refractive STATE Measurements. Far more accurate, since I can check objectively, on a weekly basis. Accurate to 0.25 Diopters.
Thank you for these ideas, Kate! As a patient and even an optom student, I remember feeling nervous about not seeing a difference. Perhaps sphere could also help with bigger jumps at first, then saving the toughest question for the end? Thank you for sharing!
Thank you Kate, Of course it is equally accurate to measure SPHERICAL. There is no legal requirement that cylinder be measured. I just use my own Test Lens Set. A personal choice. I prefer Spherical Equivalent. I confirm my Snellen at 20/20.
This video mentions, at the start, that the technique to 'search for cyl' is to help with small astigmatic powers. I always do retinoscopy first - if I decide to check my result with subjective refraction, I'll already be close to the cyl axis. If the astigmatism is very high, I would start with checking axis first, not cyl power.
Thanks a lot Kate for these wonderful skill learned, is very commendable. I am soon to start using a phoropter for my refraction 😅 so I need more complete refraction including spherical astigmatism power
My answer - use your retinoscope to check the cyl axis beforehand, if you don't have one available from retinoscopy, autorefraction or a prior pair of glasses. If the astigmatism is very high, I would start with checking axis first, not cyl power. Hence, this comment from D eyesc is helpful. This video mentions, at the start, that the technique to 'search for cyl' is to help with small astigmatic powers. I always do retinoscopy first - if I decide to check my result with subjective refraction, I'll already be close to the cyl axis.
I do prefer to make my own refractive STATE Measurements. Far more accurate, since I can check objectively, on a weekly basis.
Accurate to 0.25 Diopters.
who is breathing so hard
The guy recording the video
Pretty steady filming with one hand
Thank you for these ideas, Kate! As a patient and even an optom student, I remember feeling nervous about not seeing a difference.
Perhaps sphere could also help with bigger jumps at first, then saving the toughest question for the end?
Thank you for sharing!
Thank you Kate,
Of course it is equally accurate to measure SPHERICAL. There is no legal requirement that cylinder be measured.
I just use my own Test Lens Set.
A personal choice.
I prefer Spherical Equivalent.
I confirm my Snellen at 20/20.
Can you you make a video of complete eye test you would do in your office. Thanks
Really informative videos ! Thanks for sharing How to make astigmatic refractions simpler!
Can you explain why starting edtimation with power not with axis first ?
This video mentions, at the start, that the technique to 'search for cyl' is to help with small astigmatic powers. I always do retinoscopy first - if I decide to check my result with subjective refraction, I'll already be close to the cyl axis. If the astigmatism is very high, I would start with checking axis first, not cyl power.
Really informative videos especially for optometry students! Would love more instructional videos like these!
Thanks a lot Kate for these wonderful skill learned, is very commendable. I am soon to start using a phoropter for my refraction 😅 so I need more complete refraction including spherical astigmatism power
Great job.
Thank you! It's very helpful!
Thank you!
Thanks a lot, it was informative
You are welcome!
What if your axis is completely off to to begin with?
I start with axis check: roughly bracket the axis if you're finding the patient is unsure, then do power check then move back to axis to confirm.
My answer - use your retinoscope to check the cyl axis beforehand, if you don't have one available from retinoscopy, autorefraction or a prior pair of glasses. If the astigmatism is very high, I would start with checking axis first, not cyl power. Hence, this comment from D eyesc is helpful. This video mentions, at the start, that the technique to 'search for cyl' is to help with small astigmatic powers. I always do retinoscopy first - if I decide to check my result with subjective refraction, I'll already be close to the cyl axis.