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A developing visual field defect

Walton Centre for Neurology and Neurosurgery, Lower Lane, Fazakerley, Liverpool L9 7LJ, UK

Correspondence to:
Correspondence to:
Dr Larner;
larner-a@wcnn-tr.nwest.nhs.uk

Submitted 20 November 2000
Accepted 15 February 2001

Keywords: visual field defect; pituitary prolactinoma

A 53 year old man complained of intermittent blurring of vision confined to the left eye over a period of 12 months. It did not stop him from reading or driving. There was no history of visual loss, eye pain, or double vision. He had recently been diagnosed with hypertension and hypercholesterolaemia, for which he was treated with felodipine (5 mg once daily) and fluvastatin (40 mg once daily) respectively.

He attended his optician who performed a visual field test (suprathreshold static perimetry, fig 1), on the basis of which referral to a neurologist was recommended.

View larger version (24K): [in this window] [in a new window]   Figure 1 Visual fields mapped with suprathreshold static perimetry.