Category: diagnosis

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  

What can we do about child vision?

Every week brings in new children to my clinic; children who have hit a dead end with family doctors and paediatricians, as well as with the schools. I run a child vision development clinic, and we see children with apparent…

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,…

VILD Notes and Symptom Checklist

The attached notes and checklist are for sharing and information purposes. The Notes section offers general information about the nature of human visual function, and the Symptoms and Signs Checklist is a survey to help characterize the nature of possible…

AAP Vision Screening Recommendations

Less Than Meets the Eye: When ‘Expert’ Advice is False Economy Pediatricians receive only cursory training in assessing children’s visual function, and only minimal exposure to ophthalmic disease. This is reflected in the visual screening recommendations by The American Academy…

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…