Glasses Prescription Explained – How to read your prescription for glasses
Learn how to read your prescription for glasses! Dr. Allen walks through what an eyeglasses prescription really means in this …
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February 28, 2026
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Do you have any other questions about eyeglasses? Please let me know!
Here is a beginner's guide to glasses in case you want to learn more. https://youtu.be/k2dqcCIKQG4
My contacts at +9 to +9.5 and I have astigmatism
Very informative
4:30 having this image be slightly blurry is just cruel 😭 lol
Dr., I got my eye prescription, and I have two Spectacles Prescriptions, and I don't understand which one I should use to buy myself my glasses.
Can you help me, please?
My prescription on the left eye for Axis says .9 , but when I’m ordering online that option starts at number one it doesn’t allow for decimal numbers. Please assist.
here is the second way to avoid this problem
simply don't get an eye condition
Would you expect eyes axis value to go both up and down over the years or if that happens could one or both of the optometrists be off with their judgement? My axis measurements were
L: 80( 2012) ,90(2016), 80 (2025). R: 90(2012), 90 (2016), 85 (2025).
The sphere numbers went from +0.5 to +0.25, and cylinder -0.25 to -0.50.
I don't feel like i can't read things , i just feel like my eyes / forehead feel consistently tired and I get migraines sometimes. Any advice?
Could you speculate what is happening. I have a pair of frames which I've fitted 2 different lenses; an old (progressive), then new (Single) prescription; Same problem on both, Sight was clear when looking straight but if i looked anywhere else, I would get blur, like a lower level of prescription. I could tell by looking at text about 10 feet away and moving my head an inch or so but keeping focus on the text. I've never experienced this before with any other frame. The optician checked the new lens using equipment and it reports its not a progressive lens and has the same prescription throughout. She suggested changing the base curve but she said she could not know what the problem is.
So great Doc! I'm still trying to find out whether my polycarb is aspheric or Spherical.
Ocular Dexter and Ocular Sinister… how funny! 😂😂
Are prescription numbers for glasses the same as for contact lenses?
why my old and new prescription the number looks opposite for both of my eyes??? is that normal sir???? please respond as soon as possible…. Thanks
Imagine the complexity of prescribing corrective lenses to a 4D person. In all seriousness, I have asked my doc these questions and they’re busy so the explanation didn’t stick.
😮😢😢🎉❤😂🎉🎉😢😮
😮😢😢🎉🎉❤❤😂🎉😢😢
If you have a +.50 and -0.25 @180 ?
amazing presentation, loved it and it was useful to me, thank youuuu :=)
nice one. my prescription gives me the strength of my reading glasses. but i also have a pair for tv long vision how would i get that from it. sph+1.50 cyl-1.00 axis115.00 near add 2.0 guess reading is 3.5. what wold long vision be.
❤❤
Ok what does it mean when it says “ ADD +1.25?”
Gud job! Well dun! Thanks.
What is visual acuity? You didn't go over that.
Beauty is in the eye of the beholder 😍
Œil droit :(110°-0.50)+1.50, Addition +3.25
Œil gauche: (55°-0.75)+1.50, Addition +3.25
What can you say on my eyes?
Would it kill them to have some of this information on the RX sheet itself??
Can they put the prescription of a other glasses ?
This is awesome! Great pace and visuals. Solid information. Cheers from Tampa Bay 🌴🔥💯071625
Awesome!
I got to minute 4 and stopped. Too complex for me. 🙂
Thanks 😊
Hi! Another Joseph Allen here. 👋 It would have been nice to see your lens prescription with lines how all the different numbers affect the lens/light direction. 🙂 That way it would be easier to visualize how it all comes about. (mine are OD -150 -50 160 OS -125 -50 5). I also remember going to different optical stores and some would instead recommend a higher powered lens but rate me zero in cylinder (would appreciate your feedback here).
@DoctorEyeHealth I'm hoping you'd make a new vlog explain how to convert from progressive to single Rx lens, please? Found few YT vlogs and still trying to understand…