[Subnormal binocular vision -- principles for the classification of microstrabismus (author's transl)].

The studies of several hundred case records, most of them carefully observed for years, show that a simple definition of microstrabismus is not sufficient. Contrary to usual opinions about correspondence problems 7% of these cases were even found to be corresponding normally. One third of the cases remained unstable in their sensory behavior. In our opinion combinations of 4 sensopathological prinicples allow a better description of the clinical findings in cases showing a more complicated state. The 4 prinicples are 1. haziness of cortical connections, 2. rivalry of more than one correspondence, 3. horror fusionis, 4. inherited amblyopia -- inborn lack of monocular capacity. Furthermore it can be demonstrated that the four prinicples match with recent findings in neurophysiology and neuroanatomy.