[Effects of inconspicuous bionocular defects, their diagnosis and suggestions for therapy (author's transl)].

Unclear asthenopic complaints are often due to intermittant loss of binocularity. Simple tests are described, based on the characteristic features of physiological binocularity. They can be used to demonstrate an intermittant alternating or unilateral central scotoma which may be the result of the interaction of primarily sensory or primarily motor dysfunctions. Hence particular importance must be attached to using these methods with varying distances and directions of vision. The findings obtained from these tests should be the starting point of therapy.