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A Look into Lazy Eyes

“Figure that one out … Falls in a well, his eyes go crossed, gets kicked by a mule, they go back to normal.” —Cousin Eddie in National Lampoon’s Christmas Vacation

If, like me, you’re a fan of Chevy Chase, that’s a great line from a hilarious movie. But if, also like me, you have a child who suffers from misaligned eyes or the vision problems that often accompany the condition, the real-life situation isn’t funny and can be a source of stress and worry for concerned parents. The good news is that if caught early, crossed eyes, lazy eyes, and wandering eyes can be treated and ultimately corrected.

What is a Lazy Eye?

The term “lazy eye” is often misused by laymen when describing an eye that drifts inward toward the nose (crossed eyes) or outward toward the ear (wall-eyed), when the medical term for eye misalignment is strabismus. A person who suffers from a lazy eye has a condition known as amblyopia. Kids with amblyopia are looking clearly out of one eye while the other, the lazy eye, rests and remains fuzzy and unfocused. A person with amblyopia frequently also suffers from strabismus—an eye that moves inward or outward—but a child can have amblyopia, an eye that doesn’t work all the time, without any visible signs. On the other hand, a child can have strabismus without any vision problems. There is also a form of strabismus called accommodative esotropia, where one of the eyes turns in due to farsightedness. In this case there is clearly a vision issue which, if left untreated, could lead to blindness in one eye. In a small number of cases strabismus may be a sign of retinoblastoma, a rare form of childhood eye cancer.

Strabismus = Eyes that move independently inward, outward or up and down instead of moving together.

Amblyopia = “Lazy Eye,” a condition where the brain suppresses vision in one eye.

Strabismus

Crossed eyes and drifting eyes affect somewhere around five percent of the population. The condition has been known to run in families, but that’s not always the case. There’s nothing parents can do to prevent strabismus, but there are many ways to correct it.

The first thing all parents should do is get their babies’ eyes examined by a pediatric ophthalmologist. It’s important to have your child seen by a trained eye specialist rather than a pediatrician, because pediatricians frequently misdiagnose true strabismus as pseudostrabismus, where a child’s eyes appear to turn inward because of the shape of their face. Pseudostrabismus is common in newborns because they have fleshy, flat noses and deep eye folds. Dr. Jeffrey Cooper, a pediatric ophthalmologist for the last 30 years, says, “Amblyopia and strabismus cause more visual loss than all injuries and illness in the under 40 group. It’s a major public health concern that’s not acknowledged appropriately by pediatricians.”

I can back up this claim, as I had two pediatricians in two different states dismiss my concerns about my daughter’s wandering eyes. It took a pediatric ophthalmologist less than ten seconds to make my daughter’s eyes drift toward her ears and diagnose her with intermittent exotropia (eyes that move outward like a chameleon). The American Academy of Pediatrics agrees. They recommend that all babies have vision screening (including screening for strabismus and amblyopia) at the earliest possible age, and at regular intervals throughout childhood.

Consider the fact that eyes can move in almost any direction, some or all of the time, and you’ll realize that there are many types of strabismus with infinite degrees of severity. Ophthalmologists must tailor the appropriate treatment to each child, but the tools at their disposal generally include: wearing an eye patch for part of the day to force the weaker eye into doing all the work, placing blurring eye drops in the strong eye for the same reason, using eyeglasses that force the wandering eye to focus, surgery to physically align the eyes, and vision therapy—a specialized set of eye exercises, usually in the form of games for children, that train the eyes to work as a team. Dr. Cooper explains, “If the eyes turn in, patching or drops are used to treat the amblyopia. Some children will have an inward eye turn, associated with them being farsighted, so glasses with bifocals or a special prismatic lens are used to help align the eyes. Large eye turns, caught early in age, are best treated with surgery.”

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