In medicine, intermittent photic stimulation, or IPS, is a form of visual stimulation used in conjunction with electroencephalography to investigate anomalous brain activity triggered by specific visual stimuli, such as flashing lights or patterns.
IPS and EEGs are often used to diagnose conditions such as photosensitive epilepsy.
IPS may be used to stimulate the visual system for patients with amblyopia.
This system uses a visual stimulus that is usually red in color with a frequency of about 4 Hz to stimulate the neural pathway between the retina and the visual cortex.
The objective is to improve the visual acuity of an amblyopic (lazy) eye.