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

Understanding the basics of optics is essential for eye care professionals because it enables them to accurately diagnose and manage...

Quickguide.org  is an informal educational resource specifically for eye care professionals focusing on biometry, intraocular lens (IOL) power calculation, and advanced optics.  Educational Value and Content This site offers deep technical insights into cataract surgery preparation. Its educational strengths include:  Complex Concepts Simplified : It provides "guides" on advanced optics, such as  spherical aberration ,  diffractive orders  in multifocal lenses, and  Zernike p

The Challenge of Multifocal IOLs 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 refract

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

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

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

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

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