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Subha's Ophthalmic Page
search information related to IOL, biometry, corneal topography, etc.
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The Role of Macula Pigment and the importance of Blue Light Filtration in Intra Ocular Lens (IOL)
While there are conflicting schools of thought on the role of blue light filtration vis-a-vis Intra Ocular Lens, proponents of blue light...

Subhabrata Bhattacharya
Jun 16, 20203 min read






The post Covid-19 world- Psychological impact and the Need for Refractive based procedure screening
The Post Covidl-19 world- Psychological impact and the need for Refractive based procedure screening – The Eyesenck Personality...

Subhabrata Bhattacharya
May 2, 20203 min read


Refractive Surprise Post IOL Implantation- How to check what went wrong
How you can investigate what went wrong post IOL implantation if you have a refractive surprise

Subhabrata Bhattacharya
Mar 17, 20208 min read


Biocompatibility of IOLs - Beyond material consideration
The intention of this article is to shed some light on what may affect biocompatibility of IOLs other than the common discussions of materia

Subhabrata Bhattacharya
Jan 2, 20203 min read


Biometry Process Flow Chart
Biometry Process Flow Chart : quickguide.org published on 11/12/2019

Subhabrata Bhattacharya
Dec 11, 20191 min read


Biometry Basics - 1
quickguide.org edited and published at quickguide.org on 11/12/2019

Subhabrata Bhattacharya
Aug 30, 20191 min read


Understanding different corneal maps of the Pentacam
Talks about the different conreal maps in Pentacam

Subhabrata Bhattacharya
Jul 14, 20196 min read


Barrett A Constant to Lens Factor conversion and Design Factor
For specific A constant to Lens Factor conversion table please click on the below link : https://www.quickguide.org/post/new-a-constant-...

Subhabrata Bhattacharya
Jun 18, 20192 min read


Table Chart conversion of Wang & Koch Nomogram for High Axial Length Patient
This table chart is as per updated Wang & Koch nomogram publised at the JCRS, vol 44, Issue 11 nov 2018 While using a two variable...

Subhabrata Bhattacharya
Jun 14, 20191 min read


Patient Fixation with IOL Master 700 Biometry
Image on Left with poor fixation compared to image on right. @Subha's Ophthalmic Page

Subhabrata Bhattacharya
Jun 10, 20191 min read


The Science Behind Keratometry & the concept of Keratometry index (K Index)
Recently I was involved in a discussion on different makes of Keratometers by different companies. Many of the participants voiced their concern on the difference of reading between many different Keratometers , leading to a confusion as to which data to be relied on. On a separate article named " What to do when your K readings are different from different Keratometers " (https://www.quickguide.org/post/what-to-do-when-your-keratometry-readings-are-different-from-different-k

Subhabrata Bhattacharya
Mar 20, 20198 min read


A paradigm shift in astigmatic correction with TORIC IOLs - The concept of Total SIA by Dr Holladay
This decade has seen many new concepts cropping up with regard to the concept of astigmatic correction with TORIC IOLs. First, Douglas...

Subhabrata Bhattacharya
Mar 8, 20193 min read
Basics of Phaco - 3
We shall now focus on Phaco Energy or the power applied to break the nucleus for removal of the quadrants easily. Longitudinal phaco...

Subhabrata Bhattacharya
Feb 23, 20192 min read
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