Diagnostic value of 33 Hz steady-state visual evoked potentials in low-vision children.
Pattern-reversal visual evoked potentials elicited by patterns of 60' and 20' checks and 33 Hz steady-state flash visual evoked potentials were recorded in low-vision children (visual acuity less than 20/120) with optic atrophy (18 eyes), amblyopia (18 eyes), macular degeneration (7 eyes) and controls (24 eyes). Steady-state visual evoked potentials were non-recordable in 17 out of 18 eyes of optic atrophy patients and normal in other children. Abnormalities of pattern-reversal visual evoked potentials were similar in all groups of patients. 33 Hz steady-state flash visual evoked potentials are recommended for differential diagnosis of optic atrophy with other causes of low vision in children.
Shpak
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IRTC Eye Microsurgery, Moscow, Russia.
D000293:Adolescent; D000550:Amblyopia / Q000150:complications / Q000175:diagnosis; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005074:Evoked Potentials, Visual; D005260:Female; D006801:Humans; D008268:Macular Degeneration / Q000150:complications / Q000175:diagnosis; D008297:Male; D009896:Optic Atrophy / Q000150:complications / Q000175:diagnosis*; D010364:Pattern Recognition, Visual; D011237:Predictive Value of Tests; D015354:Vision, Low / Q000209:etiology*; D014792:Visual Acuity