Category: perception

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…

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 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…