The Eye Foundation, Coimbatore, Tamil Nadu, India.
Indian J Ophthalmol. 2020 Dec;68(12):2699-2704. doi: 10.4103/ijo.IJO_2119_20.
Over the last decade, refractive surgery has been revolutionized by advancements in ablation profiles, available for the treatment of both regular and irregular corneas. Advances in corneal imaging have helped highlight the presence of higher-order aberrations, the correction of which could result in a better quality of vision. Topographic measurements being static are more repeatable and pupil independent and therefore provide the ideal platform for correction of both lower and higher-order aberrations and could result in improved visual quality even in patients with seemingly regular corneas. The combination of topography-guided treatment with collagen cross-linking has further increased the scope of treating irregular corneas like keratoconus, post-laser in-situ keratomileusis ectasia, and pellucid marginal degeneration. This review delves into the current literature and guidelines available for the topographic treatment of regular and irregular corneas.
在过去的十年中，通过对消融轮廓的改进，屈光手术发生了革命性的变化，可用于治疗规则和不规则角膜。角膜成像技术的进步有助于突出高阶像差的存在，对其进行校正可能会提高视觉质量。与瞳孔无关且更具可重复性的地形测量结果更加稳定，因此为校正低阶和高阶像差提供了理想的平台，即使在角膜看似规则的患者中，也能提高视觉质量。地形引导治疗与胶原交联的结合进一步扩大了治疗像圆锥角膜、激光原位角膜磨镶术后扩张和边缘透明变性等不规则角膜的范围。本综述深入探讨了用于规则和不规则角膜的地形治疗的现有文献和指南。
