Vergensfunktionen

Vergensfunktionen refers to the set of eye movements that bring the two eyes into alignment on a target. This convergence of the visual axes is crucial for binocular vision, allowing for the perception of depth and a single, clear image. The vergence system is involuntary and operates automatically to maintain fusion of the images from each eye. There are two primary types of vergence: convergence, where the eyes turn inward towards the nose to focus on a near object, and divergence, where the eyes turn outward to focus on a distant object. The vergence system is controlled by a complex neural network involving cranial nerves and brainstem centers. Stimuli such as blur, disparity, and accommodative effort can trigger vergence responses. The amplitude, speed, and accuracy of vergence movements can be assessed clinically to diagnose and monitor various binocular vision disorders. Conditions like convergence insufficiency or divergence excess can impair the vergence system, leading to symptoms such as eye strain, headaches, and double vision.