Category: Treatment

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,…

The Human Visual Developmental Pyramid

Vision has often been depicted as a ‘pyramid’, with core functions and systems arriving early in development (the ‘base’) and other more advanced behaviours and skills arriving afterwards, partly as a function of earlier development. The graphic representation is designed…

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…

Reflex Integration Training

Introduction: The post Retained Primitive Reflexes provides a general overview of early (neonatal) reflexes. These are starting points for us, behaviourally speaking, and provide the foundation upon which we build more complex behaviours that allow us to explore our world.…