The Evaluation Of Retinal Function In Patients With Myopia Using Multifocal Electroretinogram

Purpose: To measure the amplitude density and latency of five-ring fist-kernel response and evaluate retinal function in patients with myopia using multifocal electroretinogram (mERG) .Method: We randomly selected 20 subjects (40eyes) aged from 18 to 24 year-old. They were examined with mERG. The axial length was measured with IOLMASTER. We analysed the amplitude density and latency of N₁, P₁ waveforms of five-ring first-kernel responses in mERG and the correlation to axial length.Result: With increasing of axial length, the response density of N₁, P₁waveforms of five-ring first-kernel responses in mERG decreased gradually(P<0.05) , but the lantency of N₁, P₁ waveforms didn't change significantly(P>0.05) except that R2 of N₁ waveforms has weak correlation to axiallength.Conclusion: Increasing of axial length can decrease the response density of N₁, P₁ waveforms of five-ring first-kernel responses in mERG, which suggests the abnormality of retinla receptors. Damaging of visual function to mypia may be resulst of increasing of axial length.