Arden G B, Hamilton A M, Wilson-Holt J, Ryan S, Yudkin J S, Kurtz A
Br J Ophthalmol. 1986 May;70(5):330-5. doi: 10.1136/bjo.70.5.330.
The pattern electroretinogram (PERG) and other tests were given to a selected group of patients with diabetes, ranging from those who had no retinopathy or funduscopic changes to those in the preproliferative state. None had visual symptoms. The PERG was found to be normal in patients with microaneurysms and a few blot haemorrhages. However, when cotton-wool spots and angiographic evidence of areas of capillary non-perfusion were present, the PERG was reduced below the normal value. Similar changes occurred with the oscillatory potentials of the ERG evoked by an intense flash, but the results were more variable. So in the individual patient the test is not a reliable indicator of the progress of the retinopathy. The value of the PERG in screening is discussed.
对一组选定的糖尿病患者进行了图形视网膜电图（PERG）及其他检查，这些患者涵盖了从无视网膜病变或眼底改变到处于增殖前期的各类患者。所有患者均无视觉症状。发现患有微动脉瘤和少量点状出血的患者PERG正常。然而，当出现棉絮斑以及毛细血管无灌注区域的血管造影证据时，PERG低于正常值。由强光诱发的视网膜电图（ERG）的振荡电位也出现了类似变化，但结果的变异性更大。因此，对于个体患者而言，该检查并非视网膜病变进展的可靠指标。文中讨论了PERG在筛查中的价值。
