Kernrechtsfrage
Whether the insured showed a rent-relevant deterioration of health after the 2008 decision.
Extrahierter Entscheid
The existing records did not sufficiently clarify the impact of the neurological and eye conditions on working capacity.
Extrahierte Begründung
The medical opinions were not sufficiently probative on the alleged cognitive deficits and eye disease; a polydisciplinary assessment was required.