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We were surprised to read that that the suggested correct explanation
of the MCQ on blue vision was sildenafil. 1 Such a consequence is not
recorded in the current edition of the British National Formulary or on
the web site Drugs.com.
We note that sildenafil is supplied as blue tablets and that the
subject of the MCQ is portrayed as having ischaemic heart disease which is
a contraindication to sildenafil use. Blue instead of rose tinted
Thandar Soe SHO
Ehsan Weidi FY1 doctor
Roger Gabriel physician, Kent & Canterbury Hospital, Canterbury