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Ten million school children in America have vision conditions that can impact learning. And, many parents may be relying on vision screenings in school to check for eye problems. But as Michael McQuillan, OD, FCOVD shares that while those screenings are good, they're not good enough. We talked with the VSP network doctor and 27-year optometric veteran to get his take on screenings versus complete eye exams.
Dr. McQuillan: Usually a school nurse is responsible. The main point of the screening is to check distance vision-how well the child can read a chart from 20 feet. But near vision isn’t tested in the screening. There might also be a color-vision test for kindergarten boys because they’re more likely to have color blindness. It’s pretty basic stuff.
Dr. McQuillan: Unfortunately, they can overlook plenty of problems. I’d say that maybe 15-20% of school children have vision problems a screening is likely to miss. Remember, the exam is checking only for distance visual sharpness - the classic blackboard-friendly “20-20 vision”- and not for other conditions. A child could easily pass the vision screening, but not be able to see well enough to read a book.
Dr. McQuillan: The most common is a problem with eye coordination. Just like some kids are “clumsy,” eyes can be clumsy too. The problem is called “binocular vision dysfunction,” and it frequently won’t show up in a screening. It can cause reading problems. Farsightedness, where you can’t see up close, is also missed a lot in screenings.
Another condition I’ve occasionally treated, after it was previously overlooked during a screening, is amblyopia, or “lazy eye.” This is where one eye wanders and doesn’t join the other eye in focusing. In return, the brain learns to ignore the visual input from the lazy eye. Lifelong vision loss can result if the problem isn’t addressed.
Dr. McQuillan: It’s really pretty simple: kids who don’t see well, don’t learn well. If a child is having problems in the classroom, rule one is get them to an eye doctor for a complete eye exam. I can’t tell you how many times I’ve diagnosed a condition that was missed in a screening, and resulted in negative results in the classroom.
Dr. McQuillan: A yearly eye exam in children is a must. Their eyes can change so quickly, and before you know it, their performance in school can suffer. The good news is that most conditions can be easily corrected, once they’re detected.
Don’t rely on school vision screenings to keep your child’s vision healthy. Make annual trips to the eye doctor just as important as yearly medical checkups. Find a VSP network eye doctor who specializes in treating young children today.