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Lotmar视力计是以白光测量视网膜功能的无色干扰仪,可在视网膜上形成规则的干扰条纹模型,频率变化范围从每视角30个条带到3个条带。使用时把它镶嵌于HaagStreit 900型裂隙灯上,让患者指出条带的方向。患者能够正确辨认方向的最细线条,即为其视网膜功能的读数。术前按此法检查,对估计不成熟白内障的术后视力可获满意结果,并能判断患者是否同时患有黄斑病变。
The Lotmar visual acuity meter is a colorless interferometer that measures the function of the retina in white light and forms a regular pattern of interference fringes on the retina in a frequency range from 30 strips per view to 3 strips. Use it when mounted on a HaagStreit 900 Slit Lamp so that the patient can indicate the direction of the strip. The patient can correctly identify the direction of the thin line, that is, its retinal function readings. Preoperative press this method to check, to estimate the immature cataract postoperative visual acuity satisfactory results, and can determine whether the patient also has macular degeneration.