Amplitude and Latency of Electroretinographical Peaks as a tool to Predict the Extent of Retinal Degeneration in Retinitis Pigmentosa Patients

Author(s): Maryam Naser, Seyed Mohammad Masoud Shushtarian

Retinitis Pigmentosa (RP) is a disease of visual system which causes loss of vision. Proper diagnosis of this disease is important as far as ophthalmologists and patients are concerned. The aim of present study is to use amplitude and latency of Electroretinographical Peaks a and b to diagnose the extent of retinal degeneration in RP patients. A population of 100 subjects was selected for the purpose of this study. Fifty subjects with normal visual system mainly retina were considered as a control group. Along with control group, 50 patients pre-diagnosed as RP were selected as a case group. Electroretinography was examined in total population. The results obtained were compared together to look for the possible changes in two groups which showed changes in amplitude and latency of ERG a and b peaks of case group in comparison to control population. It can be concluded that amplitude and latency of ERG, a and b waves can be helpful to predict the extent of retinal degeneration in RP patients.