眼中心或近中心视野的红色减饱和作用仍然是判断视神经损伤的一个有用指标。作者设计了一种近中心视野的红点卡片试验,并用于盘尾丝虫病中视神经疾病的筛选。 卡片上有中央固定孔和4个直径1cm的圆点,这4个圆点分别位于偏离中央固定孔水平线12℃的上部和下部,通过移动卡片旁边的玻片使这些圆点变为红色;此外卡片上还有4个“假孔”,以使患者不知道哪个圆 The red desaturation of the eye center or near-center vision remains a useful indicator of optic nerve damage. The authors designed a near-center view of the red-dot card test and applied it to the screening of optic neuropathy in onchocerciasis. The card has a central fixing hole and four dots of 1 cm in diameter, which are respectively located at the upper part and the lower part of 12 DEG C from the horizontal line of the central fixing hole, and the dots turn red by moving the slide beside the card. In addition There are also four “fake holes” on the card so that the patient does not know which circle