search information related to IOL, biometry, corneal topography, etc.

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

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...

Image on Left with poor fixation compared to image on right. @Subha's Ophthalmic Page

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

This decade has seen many new concepts cropping up with regard to the concept of astigmatic correction with TORIC IOLs. First, Douglas...

When can we choose a TORIC IOL for a fairly irregular cornea. It is critical to look into the central 3 to 4 mm zone of the cornea

When your different keratometry machines give different values of the corneal power of the same patient use the Barrett K calculator.

This article is in continuation to my write up in this blog ‘The Why & What of Centroid SIA involving astigmatism correction’. I would...