[临界（中央凹）闪烁融合频率（CFF）有助于鉴别器质性病变与斜视性弱视]
[Critical (foveal) flicker fusion frequency (CFF) is helpful in differential diagnosis of organic lesions from orthoptic amblyopias].
作者信息
Wildberger H, Junghardt A, Neetens A, van den Ende P
机构信息
Univ.-Augenkliniken Zürich, Zollikerberg-Zürich.
出版信息
Klin Monbl Augenheilkd. 1998 May;212(5):311-3. doi: 10.1055/s-2008-1034892.
PURPOSE
To measure critical (foveal) flicker fusion frequencies (CFF) in normal eyes, unilateral maculopathies and neuropathies and in orthoptic amblyopias.
METHODS
A newly developed apparatus (4F) with LED's measured subjective foveal CFF by ascending and descending mode in a group of normals and patients.
RESULTS
The apparatus (4F) measures temporal resolution. Foveal CFF ist more reduced in neuropathies than in maculopathies. In contrast, CFF in amblyopic eyes is hardly reduced, in most cases equal or better than in the dominant fellow eye. This is independent from the visual acuity of the amblyopic eye.
CONCLUSION
CFF testing is useful in the evaluation of unexplained (unilateral) reduction of visual acuity. A dissociation between visual acuity and CFF (within normal range) is present in cases of amblyopia.
目的
测量正常眼睛、单侧黄斑病变和神经病变以及斜视性弱视患者的临界（中央凹）闪烁融合频率（CFF）。
方法
一种新开发的配备发光二极管的仪器（4F），通过升序和降序模式测量一组正常人和患者的主观中央凹CFF。
结果
该仪器（4F）可测量时间分辨率。神经病变患者的中央凹CFF降低程度比黄斑病变患者更大。相比之下，弱视眼的CFF几乎没有降低，在大多数情况下与优势眼相等或更好。这与弱视眼的视力无关。
结论
CFF测试有助于评估不明原因（单侧）的视力下降。弱视患者存在视力与CFF（在正常范围内）的分离。
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