If the eyes point in different directions, this results in double vision. This misinformation is equalised by the brain and allows the person affected to see only with the healthy eye. The visual centre is thus no longer stimulated, and the affected eye becomes weak-sighted (amblyopic). Here the squint need not necessarily be discernible and may also only appear occasionally. Causes can be long- or short-sightedness, eye muscle problems, an astigmatism, childhood diseases, high fever or psychological crises.
Diagnosis and treatment
Within the framework of the diagnosis, visual acuity, the ocular fundus, the eye position, spatial vision and the squint angle are measured. Treatments include eye patch therapy (occlusion therapy), prism correction, orthoptic exercises or a surgical intervention to preserve binocular vision and to stabilise the interaction of both eyes.