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Great explanation👍👏👏thanx a lot . Big respect from Azerbaycan

Can you recommend some literature for Topography?

Thanks Subho Da for this wonderful explanation 🙏

This is great! I looked all over the internet for a decent explanation. Thank you.

n=1.3375 is derived from corneal posterior vetex power, and asumed that BF ratio is 0.883, K is lager than real corneal posterior vetex power, SO does TK.

Thank you so much for this explanation, don't need it for eyes but useful concept for subpixel edge detection generally too

Hi sir at 19:59 is it 60 Hz or 600 Hz??

hello sir, i am using a constant for optical biometry as advised by company people but still getting residual of -1.5 DS myope post surgery when i had planned -0.5ds

Great explanation we would need some more explanation.s

Very great. Where is part 4? 🥹

Told that i have post lasik ectasia and irregular astigmatism and irregular corneas that toric lenses want work could you tell me what you recommend.

Really u have made it simple and understandable

Can Multifocal or Trifocals used by this method if patient is having Astigmatism of 1.5 Cyn …Just asking ?????

Excellent.

This is very helpful . Thank you sir.

Links to the relevant articles in my site quickguide.org are 1) www.quickguide.org/post/optical-biometry-myth-science 2) Wang & Koch nomogram converted to simple excel sheet for reference and you will find it here: www.quickguide.org/post/table-chart-conversion-of-wang-koch-nomogram-for-high-axial-length-patients

Where can we get Penracam test done in Kolkata at reasonable price?

It's amazingly explained. Thanks alot.

I would.like to ask you , please advise me, my father 75 years of age , is due for Phaco surgery, he has been advised to apply Normo tears as a pre-surgery medication, , how long can this eye drop be used, in case of delayed surgery?

I think narrated videos are better for learning. Your videos about phacodynamic/US are great ❤️

When a physician tries to be a physicist, he turns into a jackass.

Incredible! Thank you so much!!

Hi, im looking forward for part 4 basic of phaco

Very well explained . Please share part 4 link also. And please cover application of various modes in different situations of cataract . Very helpful 👌 thanks

very practical aspects..great

great .i couldnt find the video of its part 3 ( A constant).Can you please share the link for that Biometry Part 3 video

Dear sir, we are waiting for your " Basics of Phaco - Part IV (Burst mode of power). Please please sir help us.

Very nice and easy way to make it understand

Very nice

Thank you Thank you so much

We will need your opinion regarding our cases. Thanks 🙏

Very nice and informative

That was terrific - thank you very much.

Excellent.

How to know 1\6 coming

👏🏻👏🏻👏🏻

The Part II of Biometry and subsequent parts will be available at quickguide.org.

Hello, thank you for the video! Can I ask you, is it possible to convert LogMAR directly to decimal? And how could I convert for example 1.36±0.64 LogMAR, or 0.35±0.15 LogMAR to decimal? Thank you for your help, Katerina

Correction : With 20 pps with 30% on time, I had wrongly stated the off time as 50-15=45. Apologies, the correction is 50-15=35 , that is the off time will be 35 ms.

Excellent land helpful Subho

Here is link to Part 3 ruclips.net/video/ETwofR3fB5I/видео.html

Here is link to Part 3 ruclips.net/video/ETwofR3fB5I/видео.html

Here is link to Part II ruclips.net/video/UY6ZdPKPaJ4/видео.html

This is going to be interesting

very nice, subha. relevant info explained lucidly.

is there video of part 3 in basic phaco.if yes pls share the link

What is holladay criteria??

Mobile appliacation @ oaa.app.link/launch-app-62de147e-764b-4ebd-bf18-3758c1b5447e

Sir, in case of Toric IOL..post op surprise, so for second eye???

Please let me know Any study on what is the result after adding half of refractive error of first eye?