Avon Vision Associates 860-677-6444  

New Hartford Eye Associates 860-379-7183

RETeval Full-Field Flash Electroretinogram (FFERG)

Full-field flash electroretinogram (FFERG) is a test that measures the electrical activity of the retina, which is the light-sensitive layer of tissue at the back of the eye.  

Our eye doctors use RETeval, the first and only FDA-cleared, hand-held, full-field device which allows them to conduct full-field flash electroretinogram testing in a highly efficient, non-invasive manner. Utilizing a miniature integrated Ganzfeld with multiple flash and flicker protocols, RETeval provides an objective, robust assessment of retinal function. Testing can be conducted on both eyes in less than 5 minutes!  

This device enables them to diagnose and manage a number of ocular conditions, including the following:  

  • Age-related macular degeneration (AMD): A progressive disease that affects the central part of the retina, called the macula. It can cause vision loss or blindness. 
  • Diabetic retinopathy: A complication of diabetes that affects the blood vessels in the retina. It can cause vision loss or blindness. 
  • Retinitis pigmentosa (RP): A group of inherited diseases that affect the retina’s ability to respond to light. It can cause night blindness and a gradual loss of peripheral vision. 
  • Retinal detachment: A condition in which the retina is separated from the underlying tissue. It can cause vision loss or blindness. 
  • Uveitis: Inflammation of the middle layer of the eye, called the uvea, which can cause damage to the retina. 
  • Trauma, infection, and other medical conditions can also cause retinal damage. 
  • Glaucoma: A group of eye diseases that damage the optic nerve, which carries visual information from the retina to the brain. The damage is typically caused by increased pressure inside the eye, called intraocular pressure (IOP). When the IOP is too high, it can cause damage to the fibers of the optic nerve, resulting in a loss of vision.