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Subha's Ophthalmic Page
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search information related to IOL, biometry, corneal topography, etc.
Subhabrata Bhattacharya
Sep 11, 2022
Aconstant - Immersion Ultrasound vis-a-vis Optical biometry
Aconstant - Ultrasound biometry vis-a-vis optical biometry
Subhabrata Bhattacharya
Sep 8, 2022
What is IOL Master700 TK ?
What is IOL Master TK or Total Keratometry. How does it work?
Subhabrata Bhattacharya
Sep 4, 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
Aug 4, 2022
Multifocal IOL patient evaluation
What you need to see when evaluation candidacy of a multifocal IOL patient
Subhabrata Bhattacharya
May 17, 2022
Spheric, Aspheric and Freeform lenses
The concept of freeform lens or digital lens or even order aspheric design
Subhabrata Bhattacharya
Apr 22, 2022
Vivity extended depth of focus lens
How does the VIvity lens work. Not definitive but an impression only.
Subhabrata Bhattacharya
Mar 29, 2022
Near Visual Acuity - N notation chart
Near Visual Acuity measurement
Subhabrata Bhattacharya
Feb 27, 2022
Axial length measurement with Bscan
Bscan and how it can be used for axial length measurement in challenging eyes
Subhabrata Bhattacharya
Feb 23, 2022
Sirius Topography Indices
Sirius topography key indices for Keratoconus
Subhabrata Bhattacharya
Jan 22, 2022
IOL power calculation in keratoconus
TORIC IOL calculation in Keratoconus patients
Subhabrata Bhattacharya
Jan 12, 2022
Guide to Pentacam Holladay EKR Report
How you interpret the Holladay EKR report in Pentacam
Subhabrata Bhattacharya
Nov 15, 2021
Toric IOL surprise-the missing link
Why do some patients have more residual astigmatism after implantation of a Toric IOL which is seemingly unexplained
Subhabrata Bhattacharya
Oct 7, 2021
Guide to Pentacam maps
this guide helps to interpret Pentacam corneal topography reports.
Subhabrata Bhattacharya
Sep 4, 2021
Choosing Intra ocular Lens -2: Optics
What are the key features of Intra Ocular Lens in terms of optics
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