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

How to convert from one snellen chart metric to another - conversion of metres to feet or log mar, etc

Explains what is Modular Transfer Function or MTF and what does it indicate about a lens capability of transferring image contrast

In Part III of Basics of Phaco series we look into phaco energy delivery modalities like Continuous power and Pulse mode. If you have not...

Corneal power maps in Pentacam

Takes you through the origin and science behind diffractive multifocal IOLs

How CMAL may be the answer to traditional optical biometry measuring axial length on the basis of group refractive index

The below video will describe Barrett Universal II formula, its origin and the science behind it, including Lens Factor and the Gaussian...

The author visiting Lighthouse (optics) in Kerala, India in 2018. There are very few people who would not stop by to see, if ever they pass by a Lighthouse. A Lighthouse is one of those few things that has always intrigued us and caught our imagination. Standing by the sea or the ocean, the Lighthouse has stood tall through the test of centuries to help men navigate through the many vagaries of sea life and reach destination safely. Though the history of Lighthouse can be tra

Optical biometry has added much value to refractive outcome, but there are some myths and misconceptions associated with optical biometry

This explains the science behind the Snellen chart and why is it kept at a distance of 6m or 20f from the eye

f you had a more than .50 diopter of refractive error in the first eye, here is a calculator to to consider IOL power for the second eye ba

This article explains how to interpret Zernike polynomials that is associated with aberrometry charts