Confirmatory investigation in retinitis pigmentosa is
Answer- D. ElectroretinogramAn accurate diagnosis of retinitis pigmentosa relies on the documentation of the progressive loss photoreceptor cell function, confirmed by a combination of visual field and visual acuity tests, fundus and optical coherence imagery, and electroretinography.
Optical coherence tomography
Pachymetry
Visual Acuity testing
Electroretinogram