Pits of the Disc and Maculopathy (Electroretinographic Study)

Overview

An ERG examination according to the international standard was made in 55patients with pits in the optic nerve disc. 19 of them suffered from concurrentmaculopathy.Electroretinography revealed in scotopic responses a significant reduction ofamplitudes of oscillatory potentials and reduction of potentials of the b wave instandard (maximal) reactions. Even more markedly the cone reactions and flickerwere reduced - responses to intermittent (30 Hz) photostimulation. The authorsconsider maculopathies with pits a separate nosological unit with possible hereditarytransmission. ERG signalizes a more extensive alteration of retinal structuresthan affection of the centre, probably on the basis of the circulation.Maculopathies with pits are also characterized by the fact that the dramatic dropof amplitudes is associated with the patient´s age or the duration of the disease.

Key words:
pits of the optic nerve disc, maculopathy, ERG