Terasaki H, Miyake Y
Department of Ophthalmology, Nagoya University School of Medicine, Japan.
Jpn J Ophthalmol. 1995;39(1):55-9.
The retinal functions of a 43-year-old man with diabetic retinopathy in a family affected by blue cone monochromatism were studied. While changes in visual acuity and color vision were similar to those seen in patients affected by rod monochromatism, and his spectral sensitivities on high intensity background and his threshold versus intensity curve indicated only suggestive blue cone function, mass electroretinograms (ERG) findings demonstrated well preserved blue cone function. The disparity in blue cone function between psychophysical and mass electroretinographical evaluation may be caused by the difference in how much the fovea influenced each testing. Diabetic retinopathy most likely caused significant reduction of the psychophysical blue cone function and resulted in clinical findings similar to rod monochromatism. The mass blue cone ERG was useful to differentiate blue cone monochromatism from rod monochromatism in this diabetic patient.
对一名患有糖尿病视网膜病变的43岁男性进行了研究，其家族中有蓝锥单色视患者。虽然其视力和色觉的变化与杆体单色视患者相似，并且他在高强度背景下的光谱敏感度以及阈值与强度曲线仅提示存在蓝锥功能，但多焦视网膜电图（ERG）结果显示蓝锥功能保存良好。心理物理学评估和多焦视网膜电图评估之间蓝锥功能的差异可能是由于中央凹对每种测试的影响程度不同所致。糖尿病视网膜病变很可能导致心理物理学蓝锥功能显著降低，并产生与杆体单色视相似的临床表现。在该糖尿病患者中，多焦蓝锥ERG有助于区分蓝锥单色视和杆体单色视。
