Surgical approaches to correct corneal astigmatism at time of cataract surgery: a mini-review  

作　　者：Xiao-Lei Yin Zhi-Yang Ji Xiu-Xin Li Xue-Mei Liang Shu-Xing Ji 

机构地区：[1]Department of Ophthalmology,the 305 Hospital of PLA,Beijing 100017,China [2]Department of Ophthalmology,Daping Hospital,Army Medical University,Chongqing 400042,China [3]Department of Medical Administration,the 305 Hospital of PLA,Beijing 100017,China

出　　处：《International Journal of Ophthalmology(English edition)》2024年第7期1370-1374,共5页国际眼科杂志（英文版）

基　　金：Supported by Independent Research Foundation of the 305 Hospital of PLA(No.24ZZJJLW-010).

摘　　要：Among refractive errors,astigmatism is the most common optical aberration,where refraction changes in different meridians of the eye.It causes blurred vision at any distance and includes corneal,lenticular,and retinal astigmatism.Cataract surgery used to cause a progressive increase in the pre-exisiting corneal astigmatism because of creating a surgically induced astigmatism,for example,a large size surgery incision.The development of surgical techniques during last decades has made cataract surgery interchange to treat preoperative corneal astigmatism at time of surgery.Nowadays,three surgical approaches can be used.By placing a sutureless clear corneal incision on the steep meridian of the cornea,a preoperative corneal astigmatism less than 1.0 D can be corrected.Single or paired peripheral corneal relaxing incisions(PCRIs)provide 1.0-3.0 D corneal astigmatism correction.PCRIs are typically used for treating 1.0-1.5 D of regular corneal astigmatism,if more than 2.0 D,the risk of overcorrection and irregular astigmatism is increased.When toric intraocular lenses(IOLs)are unavailable in markets,PCRIs are still a reasonable option for patients with up to 3.0 D of pre-existing corneal astigmatism.Toric IOLs implantation can correct 1.0-4.5 D of corneal astigmatism.Several IOLs are approved to correct a high degree of corneal astigmatism with cylinder power up to 12.0 D.These approaches can be used alone or in combination.

关 键 词：CORNEA ASTIGMATISM cataract surgery peripheral corneal relaxing incisions toric intraocular lens 

分 类 号：R779.6[医药卫生—眼科]