EXAMS – LAZY & TURNED EYE (Strabismus & Amblyopia)

Strabismus & Amblyopia Defined: When a visual dysfunction occurs such that an eye turns in or out it is called strabismus. Amblyopia refers to reduced vision through an otherwise healthy eye. These have a profound effect on depth perception and three-dimensional vision. When someone has amblyopia, there is a much greater risk of losing vision in the dominant eye, so it is important to address.

Understanding Strabismus in the brain: We understand that brain controls the eye muscles that position and align the eyes. We check to see if the muscles have any physical restrictions or limitations. When the muscles are unrestricted, we understand that the reason for the eye turn is in the brain and that the brain is telling the eye to be in a turned position. In my model of vision, the eye turn is a symptom of an underlying problem where the brain is actively using one eye to shut off the other one. This is called suppression. The brain is attempting to reduce visual confusion from an inability to integrate the right and left eye information together.

Treating Strabismus & Amblyopia: We seek to address the underlying suppression and look to encourage both eyes to engage in seeing together. When giving a prescription lens for these conditions, we know that the lens strength that allows both eyes to cooperate better is not necessarily the lens strength that gives the sharpest vision in each eye. We also expect that the lens strength that gives better binocular cooperation will ultimately allow the potential for better vision including clarity in each eye. Traditional patching an eye doesn’t allow for the development of using both eyes together. Based on neuroscience, we opt for newer patching alternatives that have shown benefits to building binocular vision through anti-suppression.