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Subha's Ophthalmic Page
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search information related to IOL, biometry, corneal topography, etc.
Relation between the mesopic pupil size and diffractive zone of multifocal IOL
finding the cut off value for mesopic pupil size may be important for clinicians to ensure that patients have a good distance vision even in low light
Subhabrata Bhattacharya
31 minutes ago
How does the PanOptix Pro reduce light scatter and improves light utilization?
How does the Panoptix Pro utilize more light and reduce light scatter.
Why some patients may not be happy with EDOF IOLs
Why some patients may not be happy with an EDOF IOL.
Positive or Negative spherical aberration - What gives a better depth of focus
Reference: Holladay, Jack T. MD, MSEE; Kozhaya, Karim MD; Koch, Douglas D. MD; Wang, Li MD, PhD, Impact of spherical aberration on visual...
Understanding Tecnis PureSee IOL
Explains how does the Tecnis PureSee IOL provide depth of focus and intermediate vision to patients.
Subhabrata Bhattacharya
Mar 26
ETDRS vs Snellen chart
Difference between the Snellen chart and the ETDRS chart based on logmar
Subhabrata Bhattacharya
Mar 13
Diffractive orders with multifocal IOLs, echelette design and the concept of chromatic aberration correction
standard way of diffractive trifocal IOL manufacturing has been to use the 0 order for distance, & the +1 & +2 orders intermediate & near
Understanding spiral optics designed Rayner Galaxy Intra Ocular Lens
Since the launch of the RayOne Galaxy lens, there has been a significant amount of attention focused on spiral optics and how such design...
Negative Dysphotopsia- Video explanation
This is a video explanation on negative dysphotopsia, its causes, symptoms, and treatment options.
Dr S Navneeth Kumar
Jan 19
Classification of monofocal, enhanced, and EDOF IOLs based on performance on defocus curve
Adapted from the JCRS https://doi.org/10.1097/j.jcrs.0000000000001502
Subhabrata Bhattacharya
Dec 15, 2024
Biometry case study-Selecting right patient for multifocal IOLs
A case study detailing how to avoid a bad outcome by looking into the IOL calculation or biometry page throughly
Subhabrata Bhattacharya
Dec 8, 2024
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