Category: Research

Challenging the So-Called 20/20/20 Rule

Happy to be able to contribute to this latest edition of the Canadian Journal of Optometry. “The ‘20/20/20 Rule’ – When Good Intentions and Axiomatic Habit Displace Best Practices” https://opto.ca/document/cjo-volume-78-issue-4 https://opto.ca/sites/default/files/resources/documents/cjo_w16_lores.pdf  

Astigmatism – A Primer

Astigmatism – A silent and invisible thief. No one should expect parents to understand how vision works, let alone how this might affect their children – even though they might observe very clearly the effects of significant visual impediments. Astigmatism,…

Environmental Causes of Astigmatism

A collection of readings re: the effects of posture on astigmatism. http://www.oepf.org/sites/default/files/Symphony%20Article_1.pdf Forrest-a new model of functional astigmatism Forrest-Astig as fx of visual scan, head scan, posture Forrest-eye scan therapy for astigmatism The_Effect_of_Accommodation_on_Ocular_Shape-Mutti  

Vision Blindness – Introduction

(See the Preface here.) There are many uses of the word ‘blind’. The concept is so broadly understood, and feared, that many languages have adopted the term to other common uses. When someone does not appreciate the gravity of a…

Hyperopia as Physical Disability Part 2

In the recent post, I focused on hyperopia as a physical disability. This notion, that non-blinding vision dysfunction is a disability will be a new idea to many readers. There are many reasons for this and these are worthy of…

Hyperopia as Physical Disability

Basic farsightedness, or hyperopia, is not the simple opposite to nearsightedness, or myopia. More appropriately, it is the obverse, the complete flip side of a basic principle of human visual function. A recent study confirmed once again that basic visual…

Sight Tests Not Needed

Every now and then, a blog post reveals truths about a writer or a body that was never intended as part of the original goal of writing. Doctors of optometric vision rehabilitation will recognize in the blog post linked below…