Intermediate
Technical
IVT
convergence insufficiency
A binocular vision disorder where the eyes cannot converge adequately for comfortable near vision work.
Full Definition
Convergence insufficiency is a common binocular vision disorder characterized by the inability of the eyes to work together effectively when looking at nearby objects. Patients typically experience eyestrain, headaches, blurred vision, or double vision when reading or doing close work. The condition is diagnosed through specific tests measuring convergence amplitude and often requires vision therapy or prism glasses for management.
Usage
Usage note: Often abbreviated as CI in clinical notes; distinguish from convergence spasm which is the opposite condition.
In Context
- "The patient's symptoms of asthenopia during reading were attributed to convergence insufficiency documented on examination." — Clinical assessment report
- "Convergence insufficiency should be differentiated from presbyopia in patients over 40 presenting with near vision complaints." — Differential diagnosis note
Also known as
CI
convergence weakness
Contrasted with
convergence excess
Don't confuse with
accommodative insufficiency
convergence spasm