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Subha's Ophthalmic Page
search information related to IOL, biometry, corneal topography, etc.
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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
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Jan 2, 20203 min read
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Biometry Process Flow Chart
Biometry Process Flow Chart : quickguide.org published on 11/12/2019
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Dec 11, 20191 min read
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Biometry Basics - 1
quickguide.org edited and published at quickguide.org on 11/12/2019
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Aug 30, 20191 min read
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Understanding different corneal maps of the Pentacam
Talks about the different conreal maps in Pentacam
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Jul 14, 20196 min read
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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-...
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Jun 18, 20192 min read
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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...
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Jun 14, 20191 min read
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Patient Fixation with IOL Master 700 Biometry
Image on Left with poor fixation compared to image on right. @Subha's Ophthalmic Page
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Jun 10, 20191 min read
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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
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Mar 20, 20198 min read
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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...
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Mar 8, 20193 min read
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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...
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Feb 23, 20192 min read
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Basics of Phaco - 2
In Part 1 we discussed about two basic pump systems and the footswitch positions. Against the backdrop of these information let us now...
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Feb 23, 20195 min read
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Basics of Phaco - 1
Ever since the introduction of Phacoemulsification in 1967, till today, the fundamentals have all remained the same. The three basics...
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Feb 23, 20193 min read
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Feb 17, 20190 min read
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Feb 9, 20190 min read
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Keratoconus Classification & Indices
Classification or grades of keratoconus
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Jan 22, 20190 min read
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