Sir im confused 😢 our instructor told us to determine the types of astigmatism from the prescription without transpotition he told us to follow this rule: simple myopic or hyperopic { sph=cyl} Compound myopic or hyperopic{ sph>cyl} Mixed astigmatism { CYl >sph } Example : plano -1.50 @180 .....Simple myopic With the rule astigmatism +1.50-3.50@90 ..... mixed astigmatism against the rule SIR, i want ur opinion about his method , if is correct or no ? because i really value ur response ! Regards❤
@@optometrywithkhurram6867 yes he didn't mention the sign of sph or Cyl because he told us that ophtalmologist prefer to work with + Cyl and optometrist prefer to work in -Cyl however either ways converting the prescription from - cyl to + Cyl the optical properties of the prescription remain the same ! This way i got confused about ur video because u said that we need to transpose first to determine types of astigmatism ! Thus thank you a lot for ur videos i really like them im learning a lot from you ! 🌹 i have a small request can u please make a video about fan & block ? Best regards😊
Sir as you discussed if sphere and cylinder have same power with opposite signs we transpose, and you also discussed if sphere has greater power than cylinder but with opposite signs we transpose...Now my question is that if sphere has less power than cylinder but with opposite signs suppose i transpose it will also give the accurate result for example +2/-4×90 if you transpose this prescription the result will be -2/+4×180 it means it is a mixed astigmatism
Yes exactly..i discussed only two cases 1. If sph and cyl have same power but with opposite sign. Transpose it because before transposition it will look like mixed astigmatism but after transposition it will be simple astigmatism. 2. If sph is greater than cyl with opposite sign . Transpose it. Before transposition it will look like mixed astigmatism and after transposition it will be compound astigmatism. In rest of all prescriptions we do not need to transpose.
No benefit on vision at all.. Vision remains the same. But with transposition you can prevent the magnification. And in written stock of lenses if do not find your required prescription you can simply transpose.
No. We can transpose every type of prescription having sphero-cyl and only cyl. This lecture is about that how you will recognise the type of astigmatism,
sir than wy we not prescribed already transposed prescription of glasss Or 2) hmen ye transportation nzr chek krty hiy krni ha ya .jub glasses bnaty huy prescription ko dekhty huy....to konsi equation use kren gy lenses k lia Transportation se pele wali k badd wali
@@optometrywithkhurram6867 sir i was tested at sharpsight hospital, and they gave 5 times drops in some interval of time for around 1 hr , and then tested with torch
@@optometrywithkhurram6867 at first they tested and said -2.25 and then dilated my eyes, and then gave me -1.75 power , means variation of -0.50 power in both eyes , is it possible or they tested wrong , because at first they said your power has increased & then after dilated said reduced, currently wearing -2.0 power glasses
We are not transposing it for the patient, we are transposing it for the sake of determining of type of astigmatism. In many cases we also transpose like of cyl is very high and in plus, then it can cause magnification and discomfort, so we transpose it in minus cyl.
@@susmitasuman824 with same sign no need to transpose for the purpose to find type astigmatism....but for any other need you can transpose all the prescription it depends on you its just for to find type of astigmatism
Uploading today..how can we find type of astigmatism with optical cross that either it is simple, compound or mixed or it is with the rule or against the rule.
Sir...but mostly ..as an optometrist..we prefer minus cylinder...then why u are transposing the second example??? Just for change the type of astigmatism?
Sir i have no. Plz help how u add near correction on this No. Plz I need a clarification about this near No... No. Is R/E - 3.75 DSpr /-1 cyl *100 ° L/E -3. 0 cyl *70 ° Adding +3 D sphr... Sir my question is how add near correction for this no.. N what is will b exact near correction no... Plz let me know I have confusion about this
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Thank you sir
Sir im confused 😢 our instructor told us to determine the types of astigmatism from the prescription without transpotition he told us to follow this rule: simple myopic or hyperopic { sph=cyl}
Compound myopic or hyperopic{ sph>cyl}
Mixed astigmatism { CYl >sph }
Example : plano -1.50 @180 .....Simple myopic With the rule astigmatism
+1.50-3.50@90 ..... mixed astigmatism against the rule
SIR, i want ur opinion about his method , if is correct or no ? because i really value ur response ! Regards❤
Some of these are fine but not exactly
As he said if sph = cyl then it would be simple astigmatism but he didnt mentioned signs of cyl and sph.
@@optometrywithkhurram6867 yes he didn't mention the sign of sph or Cyl because he told us that ophtalmologist prefer to work with + Cyl and optometrist prefer to work in -Cyl however either ways converting the prescription from - cyl to + Cyl the optical properties of the prescription remain the same ! This way i got confused about ur video because u said that we need to transpose first to determine types of astigmatism ! Thus thank you a lot for ur videos i really like them im learning a lot from you ! 🌹 i have a small request can u please make a video about fan & block ? Best regards😊
@@theoptometrist265 well thank you and for sure will make a video on fan and block
Sir, thank you for this video once again! I'm learning and hoping to learn from you more🙌
Welcome
Sure 👍🏻👍🏻
Hi Sir. R u available to help me with a prescription reading? Which i got from Italy. Thanks again. Please let me know
Sir after changing an additional number prescription to near vision prescription can we transpose that prescription if transmission should apply??
Sir your way to teach is brilliant ❤❤
Sir as you discussed if sphere and cylinder have same power with opposite signs we transpose, and you also discussed if sphere has greater power than cylinder but with opposite signs we transpose...Now my question is that if sphere has less power than cylinder but with opposite signs suppose i transpose it will also give the accurate result for example +2/-4×90 if you transpose this prescription the result will be -2/+4×180 it means it is a mixed astigmatism
Yes exactly..i discussed only two cases
1. If sph and cyl have same power but with opposite sign. Transpose it because before transposition it will look like mixed astigmatism but after transposition it will be simple astigmatism.
2. If sph is greater than cyl with opposite sign . Transpose it. Before transposition it will look like mixed astigmatism and after transposition it will be compound astigmatism.
In rest of all prescriptions we do not need to transpose.
Thank you sir
when do you finally evaluate the type of astigmatism?.. is it in a minus cyl form or in plus cyl form
Wrong
-2/+4
Sir make complete videos on subjective refraction and their cases
Thank you sir✨🤗
So interested sir👏👏👏👏❤
What is benefit in vision after transpose or why we need to transpose?
No benefit on vision at all..
Vision remains the same.
But with transposition you can prevent the magnification.
And in written stock of lenses if do not find your required prescription you can simply transpose.
@@optometrywithkhurram6867 Sir Thanks a lot
@@optometrywithkhurram6867 please explain "But transposition you can prevent the magnification."
Very clear sir
Sir--what to do in this case? should we do as torric transposition? Example-+2.25sph -3.50cyl 180? Pl help--
Make videos on lens material
Should we do transposition in only these two cases
Please
No.
We can transpose every type of prescription having sphero-cyl and only cyl.
This lecture is about that how you will recognise the type of astigmatism,
@@optometrywithkhurram6867 yes sir
Thankyou so much
The way you are teaching , slowly one by one....etc...is nice
MA sha Allaah
Sir, what is plus and minus in astigmatism? I mean plus and minus cylinder power?
Sir wht do you by greater than, absolute value or with sign, exple _4 and -6
sir than wy we not prescribed already transposed prescription of glasss
Or
2) hmen ye transportation nzr chek krty hiy krni ha ya .jub glasses bnaty huy prescription ko dekhty huy....to konsi equation use kren gy lenses k lia
Transportation se pele wali k badd wali
Sir, thank you for this information, i hoping to learn from you more to more, because i need so much for this information, thank you sir
What is condition when cylinder is more than spherical with opposite signs
Hello sir i have one query most od dr avoid + cylinder why?
Sir if the shp is minus ad the cyn is plus tn also we do transposition??
If we have prescription like this -0.25/+0.75/90° should we transpose it ?
You can transpose any prescription you want ..depends on ease.
But if you want to know type of astigmatism them go for this method in video.
A petient can expect how much variation in power between with and without dilation of eye in eye test
Depends which medicine you are using for dilation..different eye drop has different tonus allowance
@@optometrywithkhurram6867 sir i was tested at sharpsight hospital, and they gave 5 times drops in some interval of time for around 1 hr , and then tested with torch
@@optometrywithkhurram6867 at first they tested and said -2.25 and then dilated my eyes, and then gave me -1.75 power , means variation of -0.50 power in both eyes , is it possible or they tested wrong , because at first they said your power has increased & then after dilated said reduced, currently wearing -2.0 power glasses
What type of dilatation drops we can use sir?
What if the patient is Okay with without transposed Priscription do we still need to transpose it?
We are not transposing it for the patient, we are transposing it for the sake of determining of type of astigmatism.
In many cases we also transpose like of cyl is very high and in plus, then it can cause magnification and discomfort, so we transpose it in minus cyl.
@@optometrywithkhurram6867 thankYou sir
-2.00/-2.00× 180
Which type of astigmatism
+4sp/+2dc*90 which type?
Kindly solve one example with addition +4/-2*70 addition 1.50
+2.00/+2.00 160*
Add 1.50
Why add 1.50?
Sir can we transpose this also
-0.50/-0.50×20
Yes. You can transpose
@@optometrywithkhurram6867
How?
Sir but in the above question, both have same sign.
As per rule, both should have opposite sign.
@@susmitasuman824 sir say opposite sign in the video watch again
@@habiburrehmankhan3622
Thats what i am saying. Look at the above comment. This man is asking question of the same signs.
@@susmitasuman824 with same sign no need to transpose for the purpose to find type astigmatism....but for any other need you can transpose all the prescription it depends on you its just for to find type of astigmatism
👍
Sir if i ge R.E +2 and L.E +2 do i transpose
No
@@joyealjoy912 thank you
Sir if we have a prescription then can we determine type of astigmatism by optical cross or not?
Of course YES 👍🏻
Uploading today..how can we find type of astigmatism with optical cross that either it is simple, compound or mixed or it is with the rule or against the rule.
🤝🤝🤝🤝
Sir ji solve this
- 3.00/+3.00 @ 20°
+0.00-3.00@110*
How to transpose
-4.00 DS/+1.25DC×180°
-2. 75 sph/ -1. 25 cyl ×90°
+1.00 /-4.00*20
Aap Hindi me bhi video banao
आप इंडियन हो क्या sir
Plzz explain in hindi
Thoda hindi me bolte to jyada shi rhta
Sir...but mostly ..as an optometrist..we prefer minus cylinder...then why u are transposing the second example??? Just for change the type of astigmatism?
we can transpose any prescription we want,, this method is just to determine the type of astigmatism.
But sir why do we prefer -cylinder? Any advantages over plus cylinder? I'm an intern and just want to know
Same question sir
Hello
Sir i have no. Plz help how u add near correction on this No. Plz I need a clarification about this near No...
No. Is R/E - 3.75 DSpr /-1 cyl *100 °
L/E -3. 0 cyl *70 °
Adding +3 D sphr...
Sir my question is how add near correction for this no.. N what is will b exact near correction no... Plz let me know I have confusion about this
India me kitne % log english bolte. Ya samjhte h
Hindi mein thoda boliye sir
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