Pattern Electroretinography

Pattern Electroretinography (PERG) is a diagnostic test that measures the electrical responses generated by the retina—the light-sensitive layer at the back of the eye—when exposed to visual patterns, like a checkerboard or stripes. By analyzing these electrical signals, eye care professionals can assess the function of the retinal cells, especially those involved in vision clarity and processing, such as the ganglion cells. PERG helps detect and monitor conditions like glaucoma or optic nerve problems, providing valuable information about retinal health without invasive procedures.