thank you so much sir for doing these videos for us. They are very helpful i have been watching your videos since the first semester of my second year and i have benefited a lot from them, plz keep uploading more. much love from South Africa🥸😊
Would you mind to clarify a few points here? While discussing Astigmatism you mentioned marginal rays as paraxial and while discussing field curvature you pointed out parallel rays as paraxial rays. Also, in distortion you completely messed up the magnification, saying that barrel has higher magnification close to edges and pincushion has more magnification at the center. It’s other way round though.
Thank you for your helpful comments the part related to barrel and Pincushion has been removed already to avoid the confusion as it was later realised that the concept has been explained vise versa
![แฉ [2/4] 11 ก.ค. 67 ‘ขวัญ อุษามณี’ เผยความจริง 16 ปีที่แล้วเกิดอะไรขึ้น? | GMM25](http://i.ytimg.com/vi/K4pXnUiObbk/mqdefault.jpg)
This video is very good & suitable for understand.
Great work sir😇
Tqsm sir...this is very useful for me
Your most welcome
thank you so much sir for doing these videos for us. They are very helpful i have been watching your videos since the first semester of my second year and i have benefited a lot from them, plz keep uploading more. much love from South Africa🥸😊
Thank you very much we are going to start again
Please share it with more people thank you
Nice👏👏👏sir ..thank you
Your most welcome
Sir can you please add the definitions by words under your explanation and every thing is superb
Thank you for the suggestion will surely do it
very nice and informative. Understood despite being bio student.
Thank you for your kind words
Super sir.
Thank you for the compliment
Sir...
Why we Add +6 in vogels formula ?
Why not other more then or less the +6 why only +6 ?
Wow
Sir please upload all the basic topics of our optometry
Yeah sure a new series of topics coming soon
Sir what will be the complaint of patient with chromatic aberration?
Would you mind to clarify a few points here? While discussing Astigmatism you mentioned marginal rays as paraxial and while discussing field curvature you pointed out parallel rays as paraxial rays. Also, in distortion you completely messed up the magnification, saying that barrel has higher magnification close to edges and pincushion has more magnification at the center. It’s other way round though.
Thank you for your helpful comments the part related to barrel and Pincushion has been removed already to avoid the confusion as it was later realised that the concept has been explained vise versa
it says This video is unavailable on this device.
Draw a neat diagram of spherical aberration occurred in a lens and show there the circle of least confusion
I guess there is a diagram already given while explaining spherical aberration
Draw a neat diagram of spherical aberration occurred in a lens
The diagram showed while explaining is for lens only
Barrel distortion is seen with negative spectacles lenses not positive and pincushion distortion is seen with positive lenses
Hi ishika
Thank you for your comment I know that it has been said vice versa in the video hence that much part was removed.
It would be more clear if you add subtitles
Would surely do that
Plus lens cause pincushion dispersion and Minus lens causes barrel dispersion!
Yes
why i cant play this video
Really sorry to hear that we will look into it and fix at the earliest
Sir ye Hindi me video banye sir please
Hindi m sir