Self‐Induced Photogenic Seizures in a Child with Severe Myoclonic Epilepsy in Infancy: Optical Investigations and Treatments
- 1 July 1995
- Vol. 36 (7) , 728-732
- https://doi.org/10.1111/j.1528-1157.1995.tb01053.x
Abstract
In a 2-year-old patient with severe myoclonic epilepsy in infancy, we studied self-induced photogenic seizures using optical filters and blue-tinted contact lenses. The patient induced absences and/or myoclonic jerks by two kinds of behaviors: flickering hand movement (FHM) and forced eye closure (FEC). The placebo inhibitory effect on FHM by a blank goggle frame indicated that acquisition of learning affected the frequency of FHMs per se. Optical studies suggested that the degree of absorption from approximately 600-700 nm might determine the inhibitory effect of filters on FHM. Investigations using contact lenses showed that blue-tinted lenses gradually reduced photosensitivity and inhibited FHMs.Keywords
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