Gershoni Assaf, Barrett Graham D, Sella Ruti
Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
Department of Ophthalmology, Sir Charles Gairdner Hospital, Perth, WA, Australia.
Ther Adv Ophthalmol. 2025 Jun 21;17:25158414251348882. doi: 10.1177/25158414251348882. eCollection 2025 Jan-Dec.
Keratoconus is a progressive ectatic corneal disease characterized by corneal thinning, steepening, and irregular astigmatism, presenting unique challenges for intraocular lens (IOL) calculations in cataract surgery. The use of traditional formulas for IOL calculations in eyes with keratoconus frequently leads to significant refractive prediction errors, often resulting in a hyperopic shift, which can lead to suboptimal outcomes and reduced patient satisfaction. This review examines the impact of keratoconus on IOL calculations and highlights recent advancements in formulas specifically designed for eyes with keratoconus, particularly the Barrett True-K and the Kane Keratoconus formulas. We assess the effectiveness of these formulas based on the current literature and provide clinical recommendations aimed at improving surgical outcomes in this complex patient group.
圆锥角膜是一种进行性角膜扩张性疾病，其特征为角膜变薄、变陡以及不规则散光，这给白内障手术中人工晶状体（IOL）的计算带来了独特挑战。在圆锥角膜眼中使用传统的IOL计算公式常常会导致显著的屈光预测误差，常出现远视偏移，这可能导致效果欠佳以及患者满意度降低。本综述探讨了圆锥角膜对IOL计算的影响，并着重介绍了专门为圆锥角膜眼设计的公式的最新进展，特别是巴雷特True-K公式和凯恩圆锥角膜公式。我们根据当前文献评估这些公式的有效性，并提供旨在改善这一复杂患者群体手术效果的临床建议。
