Andreas Lubitz feared deteriorating vision would cost him pilot 's licence . Comment: He also experienced breakdown in relationship with long-term girlfriend . Investigators believe together they triggered 'madness ' that ended in crash .
Andreas Lubitz feared deteriorating vision would cost him pilot 's licence . A detached retina causes blurred vision and can even lead to blindness . He also experienced breakdown in relationship with long-term girlfriend . Investigators believe together they triggered 'madness ' that ended in crash .