Corneal protection and patient acceptance of electroretinographic procedures are improved if a hydrophilic contact lens is used as a cushion under the Burian-Allen electroretinogram electrode. No alteration of signal amplitude or quality was associated with this application of soft lenses.
Dawson WW, Zimmerman TJ, Houde WL. A Method for More Comfortable Electroretinography. Arch Ophthalmol. 1974;91(1):1-2. doi:10.1001/archopht.1974.03900060005001