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Discovering quickguide.org: Your Go-To Resource for Eye Care Professionals

quickguide.org is an informal educational resource specifically designed for eye care professionals. It focuses on biometry, intraocular lens (IOL) power calculation, and advanced optics. This platform aims to simplify complex concepts, making them accessible and understandable. Educational Value and Content Quickguide.org offers deep technical insights into cataract surgery preparation. Its educational strengths include: Complex Concepts Simplified : The site provides guide

Jan 132 min read

Hyperopic surprise in multifocal IOLs - why good distance vision can mask poor near vision

Why Multifocal IOL Patients Sometimes Have Poor Near Vision Despite Good Distance Vision

Patients with multifocal IOLs expect to be free from glasses for distance, intermediate, and near vision. However, refractive surprises can occur, leading some patients to still require glasses. In my earlier article, "The Mystery of the Near with Presbyopia Correction IOL" ( link ), I discussed how factors like corneal shape and axial length can affect near vision. In this article, I will explain how a refractive surprise or incorrect refraction can result in good distance v

Optics

Nov 21, 20255 min read

Understanding Toric IOL Power Distribution in Intraocular Lens Optics

Explains how the Toric IOL nomenclature works and how the IOL power is distributed in the IOL optics for a spherical equivalent IOL power of 10 diopters and a Toric model of T4 or T5

TORIC

Oct 22, 20251 min read

a picture showing a IOL power calculation formula page

Understanding Modern IOL Power Calculation Formulas Haigis, Barrett, EVO and Kane Explained

This article provides insights into the different modern IOL power calculation formulas like the Barrett Universal, Kane and EVO formula

Biometry

Sep 4, 202513 min read

Choice of EDOF according to individual patients spherical aberration values

The following table will help in the choice of EDOF IOL based on spherical aberration of the cornea of the patient and the induced spherical aberration by the IOL

Quick

Aug 17, 20251 min read

EDOF versus Monofocal Options: Navigating the Choice of IOL for Cataract Surgery

Cataract surgery is one of the most common procedures performed worldwide, helping millions regain clear vision each year. For patients, choosing the right Intraocular Lens (IOL) is a significant decision during this process. The two primary types are Extended Depth of Focus (EDOF) lenses and Monofocal lenses. Understanding the differences between these options can empower patients to make informed choices that fit their lifestyles and vision needs.

Jun 8, 20254 min read

depth of focus with spherical aberration

Positive or negative spherical aberration- Which of the two provides better depth of focus by EDOF IOLs?

This article provides an understanding of circle of least confusion or best focus in presence of spherical aberration and what kind of spherical aberration may provide a better depth of focus

Optics

Jun 4, 20258 min read

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

Optics

May 17, 20257 min read