Shetty Rohit, Brar Sheetal, Sharma Mohita, Dadachanji Zelda, Lalgudi Vaitheeswaran Ganesan
Cornea and Refractive Surgery Department, Narayana Nethralaya, Bengaluru, Karnataka, India.
Consultant, Nethradhama Superspecialty Eye Hospital, Bengaluru, Karnataka, India.
Indian J Ophthalmol. 2020 Dec;68(12):2723-2731. doi: 10.4103/ijo.IJO_32_20.
PresbyLASIK is one of the most commonly used modalities of surgical correction in presbyopes with no cataract. Unlike monovision procedures, both the eyes are adjusted for near and distance, providing a good stereopsis. This works by creating a corneal multifocality and increasing the depth of focus. Most techniques of presbyLASIK currently employ hybrid methods, i.e., a component of monovision added on to a multifocal corneal ablation. Choosing an appropriate proportion of these two components according to the patients' requirements and meticulous patient selection are key to obtaining desirable outcomes. Being corneal-based procedures, presbyLASIK has shown to be reversible. Thorough updated knowledge of the different presbyLASIK procedures, their principles and outcomes based on previous studies is required before a refractive surgeon plans to start providing presbyLASIK services. We performed a comprehensive search on PubMed with the keywords "Presbyopia surgery," "PresbyLASIK" "PresbyMAX," "Supracor," and "Custom-Q." In this review article, we have explained the principles of the various presbyLASIK procedures, appropriate patient selection and planning on the devices with examples, and summarized the previously published outcomes of these techniques.
老视准分子原位角膜磨镶术（PresbyLASIK）是无白内障老视患者最常用的手术矫正方式之一。与单眼视手术不同，PresbyLASIK对双眼进行近视力和远视力调整，可提供良好的立体视觉。其原理是通过制造角膜多焦点性并增加焦深来实现。目前，大多数PresbyLASIK技术采用混合方法，即在多焦点角膜切削基础上增加单眼视成分。根据患者需求选择这两种成分的合适比例并精心挑选患者是获得理想效果的关键。作为基于角膜的手术，PresbyLASIK已被证明具有可逆性。在屈光手术医生计划开展PresbyLASIK手术之前，需要全面更新基于既往研究的不同PresbyLASIK手术方法、原理及效果等方面的知识。我们在PubMed上使用关键词“老视手术”“PresbyLASIK”“PresbyMAX”“Supracor”和“Custom-Q”进行了全面检索。在这篇综述文章中，我们解释了各种PresbyLASIK手术的原理，举例说明了合适的患者选择及设备规划，并总结了这些技术此前发表的效果。
