Guido understands that Tracey’s unexpurgated diaries revealed a penchant for Viagra to put some led in the pencil when she was taking his dictation. (Old seaside postcard joke, but Guido feels it appropriate in this context).

Guido is concerned that the associated risks for 60somethings necking the blue pills were not understood by Prezza. Rapid vision loss within 24 hours can occur. The condition, known as nonarteritic anterior ischemic optic neuropathy (NAION), causes a rapid reduction of vision and can, in the most serious cases, lead to blindness. Clearly it led to Prescott being blind to the consequences.