Category: refractive error

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…

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 psychiatric implications of hyperopia

Hi Everyone, As we all know, vision has a keystone role to play in child development, behaviour, and learning. Still, (pathetically) few children are assessed adequately prior to Grade 1. We know that in Texas, Canada (That is, Alberta, with…

Myopia Control

There is much to be said about means and theory of myopia control. This includes the plain fact that there is not a lot of clear science behind a) if it is possible, and b) what works. In a recent…

VT Tip: Cylinder and Reading

Cylinder (astigmatism) >1.00 diopter, especially oblique, degrades reading performance. Amounts >2.00 diopters induce ‘lazy eye’ and cause sometimes severe medical and pseudo-psychiatric disorders. The ciliary body doesn’t care about spherical equivalent. (you can quote me on that) Now that’s something…

What All Parents Need To Know About Vision

Strong Vision Is Critical For Success In School And For Full Child Development In Alberta, vision assessment in children is considered optional and this leads to some serious concerns when children who need the help don’t get it. Slowly but…

Bruckner Reflex

From: Assessment of a modification of Brückner’s test as a screening modality for anisometropia and strabismus – Abadan Khan Amitava1, D Kewlani1, Z Khan2, A Razzak2 Figure 1 : A – Photographic Bruckner reflex in a 10 years female: Note…

Child Visual Development

This excellent review provides a concise overview of child visual development from birth to 12 months. The page also includes tips on how to ensure your child is developing well. http://infantsee.org/x3638.xml Children should be assessed for visual dysfunction by 12…