Transcription of HOW TO UNDERSTAND IT How to interpret visual fields
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HOW TO UNDERSTAND IT How to interpret visual fields
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. After requesting quantified visualfield tests, the patient returns with ablack and white printout with numbers(eg, Humphrey fields ) or coloured lineson a sheet (eg, Goldmann fields ).
May 31, 2015 · therefore, rod photoreceptors do not con-tribute to the findings. 2. The normal field of vision extends to approximately 60° nasally, 90° temporally, 60° superiorly and 70° inferiorly. 3. The blind spot indicates the location of the optic nerve head—an area with no photoreceptors—in the temporal part of the visual field. 4.
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