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Subha's Ophthalmic Page
search information related to IOL, biometry, corneal topography, etc.
If you are new to my site:
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
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Jul 18, 20235 min read
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
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Apr 16, 20233 min read
Astigmatism with TORIC IOLs
Explains astigmatism and how it is corrected with glasses and TORIC IOLS
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Apr 13, 20230 min read
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
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Feb 5, 20231 min read
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
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Jan 25, 20239 min read
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....
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Jan 21, 20231 min read
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.
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Jan 10, 20231 min read
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.
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Jan 10, 20231 min read
Podcast - Posterior Capsular Opacificaion in 5 minutes
The etiology of posterior capsular opacification or PCO after cataract surgery.
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Nov 22, 20220 min read
Aconstant conversion optical - US biometry
Explains the relationship between optical aconstant and contact or immersion aconstant taking into account type of keratometry.
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Nov 20, 20221 min read
Aconstant - Immersion Ultrasound vis-a-vis Optical biometry
Aconstant - Ultrasound biometry vis-a-vis optical biometry
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Sep 11, 20220 min read
What is IOL Master700 TK ?
What is IOL Master TK or Total Keratometry. How does it work?
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Sep 8, 20221 min read
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.
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Sep 4, 20221 min read
Multifocal IOL patient evaluation
What you need to see when evaluation candidacy of a multifocal IOL patient
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Aug 4, 20221 min read
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