According to the electroretinogram, the animals'sense of sight was not impaired by the double mutation.
From the sciencedaily.com
The mesotopic level is approximately 100 times lower than the clinical level used for the typical high level electroretinogram.
From the en.wikipedia.org
In the researchers'experiments, this electrical signal was measured by a tool called an electroretinogram, which uses a contact placed on the surface of the eye.
From the sciencedaily.com
The researchers used the electroretinogram on normal fruit flies and found that these flies lost both their sight and some retinal cells after nine days of exposure, as expected.
From the sciencedaily.com
More examples
A graphical recording of the electrical activity of the retina that results when light is flashed into the eye
Abbreviated ERG. An electroretinographic recording. See: Electroretinography.
An electrophysiological test of retinal function; the wave forms show the function of rods, cones, and bipolar cells.