Category: visual

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,…

Iseikonic Lenses

Iseikonia (eye-suh-koh-nee-ah) is a state where the left and right eyes produce equally sized images on the retina. Aniseikonia, then, is a condition where, for whatever reason, the retinas are shown imagery of distinctly different size. Aniseikonia results from a…

The Developmental Pyramid

The ‘Developmental Pyramid’ (Extract from Dr. B’s Parent and Teacher Guides  ‘Child Vision, Learning, and Development’ series:  Fundamentals 1: Learning Mechanics) It’s helpful to look at human development as the construction of a pyramid, with basic (or core) functions at…

The McGurk Effect

A more complicated explanation follows, but simply put, the McGurk effect happens when our eyes tell our ears what they’re hearing. It’s a wonderful demonstration of how vision and hearing are paired in language. In the the video that follows,…

“Your Child Is Mildly Mentally Retarded”

(Note to parents: Is your child struggling in school or showing signs of other behavior problems? Check vision first before any other testing or interventions. It is the most logical, kindest, and cost-effective place to start. The following story is…

Review of Auditory and Visual Processing

Recommended Reading: Article from the Journal of Behavioral Optometry Vol23/2012/No 4. Download: Historical Perspectives on Auditory and Visual Processing This review by Dr. Len Press covers a lot of ground in a very few pages. It exposes the broad issues…