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

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

Here is Lens Factor to corresponding A constant for Barrett Universal II. Earlier in video presentation https://www.quickguide.org/post/...

A key element in evaluating a patient for multifocal IOL candidacy should include determination of normal binocular vision.

https://www.youtube.com/watch?v=6U2tr2Lgwdo&t=42s

https://www.youtube.com/watch?v=7c9xTsMVJFE&t=690s https://www.youtube.com/watch?v=7c9xTsMVJFE&t=690s

https://www.youtube.com/watch?v=1FUUCmq9lAQ&t=221s

The below video is part of a four video series explaining astigmatism and its correction with glasses and Toric IOLs....

In Part II of Basics of Phaco we will look into the phaco energy aspects, particularly, stroke length, frequency of hand piece, etc