Gaussian optics, Gullstrand eye, & Biometry
THe role of mathematics and gaussian optics in Biometry for IOL power calculation
top of page
Subha's Ophthalmic Page
search information related to IOL, biometry, corneal topography
Subhabrata Bhattacharya
- 8 hours ago
Pin hole Test - Interpretation
Interpreting a pin hole test for vision testing.
Haigis L Formula for Post Lasik
This tool will help you to use Haigis L formula for post lasik patients. As first step it helps you to convert K readings.
Subhabrata Bhattacharya
- Aug 23
Shammas post Lasik A-constant and Corneal reading conversion
This allows you to convert post Lasik corneal reading and IOL constant to Shammas post lasik formula with no history method
Subhabrata Bhattacharya
- Jul 18
Why we should stop asking about Abbe Number with Intra Ocular Lenses
This article describes what is Abbe number and chromatic aberration and answers if Abbe number is important for IOL industry
Subhabrata Bhattacharya
- Apr 16
How to satisfy a patient who is having difficulty adjusting to astigmatism correcting glasses.
If a patient complains about his glass prescription and finds difficult to adjust to cylinder, how can you prescribe modify the prescription
Subhabrata Bhattacharya
- Apr 13
Astigmatism with TORIC IOLs
Explains astigmatism and how it is corrected with glasses and TORIC IOLS
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
- Jan 25
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 23
Calculating Optical Biometry Aconstant from contact/applanation ultrasound Aconstant
Converting contact ultrasound biometry aconstant to optical biometry aconstant
Subhabrata Bhattacharya
- Jan 21
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
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 10
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
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.
Just in case you want to support the initiative of maintaining this website free:
©2023 by Subha's Ophthalmic Page.
bottom of page