Convergence insufficiency (CI) is the eye teaming problem most parents have heard of. But it's one of several related conditions, called vergence disorders, that affect how the two eyes aim together. Some cause very similar symptoms, so getting the right diagnosis matters.
Convergence insufficiency
The eyes have trouble turning inward for close work and tend to drift out. Symptoms show up mostly during reading: headaches, blur, double vision, and losing place.
Convergence excess
The opposite problem: the eyes turn in too much when looking up close. It's often linked to the focusing system working too hard. Children may have:
Eye strain and headaches with reading
Blurry or double vision up close
Holding books unusually close
Trouble shifting focus from the board to their desk
Convergence excess is often treated with reading glasses, vision therapy, or both.
Divergence problems
Some children have trouble with eye alignment at a distance rather than up close:
Divergence excess: The eyes tend to drift outward when looking far away. Parents may notice an eye wandering when a child is tired or daydreaming.
Divergence insufficiency: The eyes tend to turn in at distance, which can cause double vision when looking across a room or at the board.
Fusional vergence dysfunction
The eyes are aligned on average but have a limited range for adjusting, so they tire easily at any distance. Symptoms often look like general eye fatigue.
Why the exact diagnosis matters
These conditions can feel similar, but treatment differs. Exercises meant for CI may not help convergence excess, and glasses that help one condition may not help another. A thorough evaluation measures eye alignment and teaming at both near and far before recommending a plan.
Schedule an evaluation in Clermont
Hope Vision Development Center specializes in binocular vision evaluations and vision therapy for children with eye teaming disorders. Our In-Office Training program is an approved Florida Empowerment Scholarship (FES-UA) service through Step Up For Students.
Call 352-243-4673 or email pcc@hopevdc.com to schedule. We're at 235 Citrus Tower Blvd., Suite 107, Clermont, FL.