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视网膜色素变性(RP)患者的眼血液动力学是否异常?若有异常,是出现在早期还是晚期?为研究此问题,选择确诊为典型RP的患者13例,并以10名正常人为对照。两组年龄均相匹配。以自动视野计测定阈值,测试范围为中央20°视野,亮度分成16个光强度。光刺激时间一般为0.25秒,若无反应,等候2秒;有反应则0.5秒后开始下一个光刺激。在约9次阈值测定中,随机地对盲点曝光一次,以检查注视情况。用带有眼脑血管测量装置的气眼
Is eye hemodynamics abnormal in patients with retinitis pigmentosa (RP) and is early or late abnormality? To investigate this problem, 13 patients with confirmed RP as typical and 10 normal controls were selected. Both groups are age matched. To determine the threshold with automatic perimetry, the test range of 20 ° central field of vision, the brightness is divided into 16 light intensity. Light stimulation time is generally 0.25 seconds, if there is no response, waiting for 2 seconds; reaction is 0.5 seconds after the start of the next light stimulation. In about nine threshold determinations, blind spots were randomly exposed once to check for fixation. Use the eye with an ophthalmic vascular device