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Subha's Ophthalmic Page
search information related to IOL, biometry, corneal topography, etc.
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Understanding astigmatism or cylinder and how it is corrected by prescription glasses
In this article, I will explain astigmatism and how it is corrected with glasses. To further reference you can also see my video explanations in the TORIC section (https://www.quickguide.org/post/eye-astigmatism-part-1) .To explain in a lucid way, we will talk in terms of corneal astigmatism or cylinder, and its correction with prescription glasses. Imagine you visit your doctor and he/she finds out that you have only astigmatism with no myopia or hypermetropia. In this case
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Oct 7, 20186 min read
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IOL power calculation challenge in Post Lasik patients - Going beyond traditional biometry
What are the major challenges in post Lasik IOL power calculation and how you could get around them
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Oct 7, 20184 min read
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Aconstant conversion - Immersion Ultrasound Biometry to Optical Biometry
This topic deals exclusively about conversion of immersion ultrasound aconstant to optical aconstant, when you need to convert, or not.
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Oct 7, 20184 min read
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Guide to Cataract Surgery
This is a quick step by step guide to the cataract surgery process and phaco surgery
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Oct 7, 20189 min read
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The Mystery of the Near with Presbyopia Correction IOL
What could be the potential cause of some patients not getting optimum near vision with multifocal IOLs
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Oct 6, 20186 min read
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Understanding Biometry & IOL Power Calculation
This article gives a brief outline on IOL power calculation formulas (biometry)
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Oct 6, 201813 min read
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Spherical Aberration, Q factor & choice of IOL
Explains Q factor and corneal asphericity and how it can be related to the choice of Intra Ocular Lens or IOL
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Oct 6, 20185 min read
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