Department of Ophthalmology, University of Arizona, Tucson, USA.
Cornea and Refractive Surgery Services, Narayana Nethralaya Eye Institute, Bangalore, Karnataka, India.
Indian J Ophthalmol. 2020 Dec;68(12):2831-2834. doi: 10.4103/ijo.IJO_2078_20.
Recent advances in the diagnosis and treatment of ectatic corneal disease have mandated a more modern staging system. The new Belin ABCD keratoconus staging system incorporates anterior and posterior curvature centered on the thinnest point of the cornea, thinnest pachymetry values and distance visual acuity in grades from 0-4. By including posterior curvature and thickness measurements based on the thinnest point, as opposed to apical, the new staging system better reflects anatomical changes seen in keratoconus and other ectatic diseases.
近年来，扩张性角膜疾病的诊断和治疗取得了进展，因此需要一个更现代的分期系统。新的 Belin ABCD 圆锥角膜分期系统结合了以角膜最薄点为中心的前、后曲率，最薄的角膜厚度值和从 0-4 级的距离视力。通过包括基于最薄点的后曲率和厚度测量值，而不是顶点，新的分期系统更好地反映了圆锥角膜和其他扩张性疾病中所见的解剖变化。
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