[Value of functional disorders in the diagnosis of idiopathic retinal detachment]

The most interesting aspect of functional retinal troubles as everyone knows lies in the fact that they (1) constitute an alerting symptom, especially in high-risk patients and (2) they are a localizing sign of retinal tears. The main problems though arise when the ocular fundus cannot be correctly seen because of altered transparent tissues. In all cases these functional troubles require a retinal examination without delay.