Can You Check for Convergence Insufficiency at Home?
Many parents search for an at-home or online convergence insufficiency (CI) test. Here's the honest picture.
What home can't do
There is no at-home or online test that can diagnose CI. The National Eye Institute explains that a child can have perfect vision and still have CI, which is why a regular eye exam may not catch it. It takes specific measurements by an eye doctor.
What an eye doctor measures
According to the NEI, testing for CI looks at:
- How far the eyes can turn in toward the nose before double vision starts or one eye drifts out (near point of convergence)
- How much the eyes tend to drift out at near and far distances
- How well the eyes switch focus between near and far
What you can do at home: notice
Observation is genuinely useful. Watch during homework or reading and jot down what you see:
- Does your child rub their eyes, squint, or close one eye?
- Do they complain of blur, double vision, headaches, or words moving?
- Do symptoms build the longer they read?
Bring those notes, or your results from our checklist, to a comprehensive eye exam and ask specifically about binocular vision testing. Please don't try exercises before a diagnosis: the right treatment depends on what the exam finds.
Source: National Eye Institute: Convergence Insufficiency. See also: Convergence insufficiency in kids.
Wondering if it's a vision problem?
Take the free checklist, then talk with a developmental optometrist.
