Frequency doubling technology perimetry in non-arteritic ischaemic optic neuropathy with altitudinal defects

The British Journal of Ophthalmology
C A GirkinJulio DeLeon-Ortega

Abstract

To determine if frequency doubling technology perimetry (FDT) is more sensitive to optic nerve injury in non-arteritic ischaemic optic neuropathy (NAION) than standard automated perimetry (SAP). Charts from 18 patients (20 eyes) with NAION with altitudinal defects who underwent a complete neuro-ophthalmic examination, SAP, and FDT were reviewed. The extent of damage as determined by SAP, FDT, and clinical estimation of the regional extent of optic disc pallor was compared. 10 subjects (20 eyes) with normal ocular examinations and full appearing optic nerve heads were included as a control group. FDT demonstrated more extensive visual field defects in the relatively intact hemifield on SAP (proportion of locations at 5% or worse in the total deviation plot was 8.7% (SD 6.2%) for SAP and 38.3% (39.5%) for FDT p<0.0027). 16 of 20 eyes with altitudinal NAION demonstrated diffuse optic disc pallor. 11 of these eyes with diffuse pallor demonstrated significant defects in both hemifields using FDT, while only two eyes demonstrated diffuse damage using SAP. Correspondence between the extent of optic disc pallor and the extent of visual scotoma was higher for FDT (85%) than with SAP (40%). FDT appears more sensitive to axonal injury ref...Continue Reading

References

Nov 15, 1988·American Journal of Ophthalmology·A M MansourS Logani
Jan 1, 1988·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·O I TraustasonJ M Weiner
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Citations

May 25, 2012·Middle East African Journal of Ophthalmology·Michael K YoonTimothy J McCulley
Dec 13, 2006·American Journal of Ophthalmology·Julio Deleón-OrtegaChristopher A Girkin

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