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Subha's Ophthalmic Page
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search information related to IOL, biometry, corneal topography, etc.
Astigmatism with TORIC IOLs
Explains astigmatism and how it is corrected with glasses and TORIC IOLS
Subhabrata Bhattacharya
Apr 13, 2023
Effective near add power for multifocal IOL based on patient axial length, Keratometry.
This calculator helps you to predict near add power in corneal or spectacle plane based on patient details and multifocal IOL add in lens
Subhabrata Bhattacharya
Feb 5, 2023
Understanding Defocus Curve of multifocal IOLs
defocus curve helps us to understand the peak near, intermediate vision that a multifocal IOl is capable of providing to patients
Subhabrata Bhattacharya
Jan 25, 2023
Calculating Optical Biometry Aconstant from contact/applanation ultrasound Aconstant
Converting contact ultrasound biometry aconstant to optical biometry aconstant
Subhabrata Bhattacharya
Jan 23, 2023
A constant Optimization Tool
This is an Aconstant optimization tool develped with the objective to make Aconstant optimization simple, yet effective. Please input 30 cas
Subhabrata Bhattacharya
Jan 21, 2023
Predicted post operative ACD calculator to match ELP
This calculator gives you an idea about post operative ACD or ELP by predicting it based on preoperatve ACD with optional lens thickness....
Subhabrata Bhattacharya
Jan 21, 2023
Basics of Phacoemulsification(Video)- Part 1
Part 1 of Basics of Phacoemulsification(Phaco) talks about the Peristaltic Pump, FootPedal Science, and phaco fluidics sans U/S.
Subhabrata Bhattacharya
Jan 10, 2023
IOL Power in post Lasik - When we can use standard IOL calculation formulae for Lasik patient
No we cannot use standard IOL calculation formula for post lasik IOL calculation, except for the EKR report in Pentacam.
Subhabrata Bhattacharya
Jan 10, 2023
Podcast - Posterior Capsular Opacificaion in 5 minutes
The etiology of posterior capsular opacification or PCO after cataract surgery.
Subhabrata Bhattacharya
Nov 22, 2022
Aconstant conversion optical - US biometry
Explains the relationship between optical aconstant and contact or immersion aconstant taking into account type of keratometry.
Subhabrata Bhattacharya
Nov 20, 2022
Aconstant - Immersion Ultrasound vis-a-vis Optical biometry
Aconstant - Ultrasound biometry vis-a-vis optical biometry
Subhabrata Bhattacharya
Sep 11, 2022
What is IOL Master700 TK ?
What is IOL Master TK or Total Keratometry. How does it work?
Subhabrata Bhattacharya
Sep 8, 2022
Angle Kappa and multifocal lens bull’s eye
A theoretical representation of what should be the ideal bull's eye (central optic) diameter of lens to be less susceptible to angle kappa.
Subhabrata Bhattacharya
Sep 4, 2022
Multifocal IOL patient evaluation
What you need to see when evaluation candidacy of a multifocal IOL patient
Subhabrata Bhattacharya
Aug 4, 2022
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