Transcription of HOW TO UNDERSTAND IT How to interpret visual fields
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How to interpret visual fieldsSui H Wong,1,2 Gordon T Plant1,2,31 Department of Neuro-ophthalmology, Moorfields EyeHospital, London, UK2 Medical Eye Unit, St Thomas Hospital, London, UK3 National Hospital for Neurologyand Neurosurgery, London, UKCorrespondence toDr Sui H Wong, Consultant inNeuro-ophthalmology,Moorfields Eye Hospital,162 City Road, LondonEC1V 2PD, 31 May 2015 Published Online First3 July 2015To cite:Wong SH, Plant ;15:374 you are assessing a patient withvisual difficulties or optic disc a bedside visual field examinationwith waggling fingers and even a redhatpin, you decide that there is an abnor-mality.
May 31, 2015 · ness; each consecutive drop in number represents a 5 dB change and each drop in letter represents a 1 dB change. By convention, the examiner maps three isopters: lines of equal sensitivity to targets of a specified size and luminance. The first isopter, mapping the farthest peripheral vision, requires the largest and brightest target ‘V4e’.
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