Cataract Clinical Trial
Official title:
Comparison of Surgically Induced Astigmatism After Microincision Cataract Surgery (B-MICS 1.4 mm and C-MICS 1.8 mm) and C- SICS 2.4 mm
The aim of the study is to compare functional results and complications of 3 methods of cataract phacoemulsification: bimanual 1.4 mm cataract surgery (B-MICS), coaxial 1.8 mm cataract surgery (C-MICS) and coaxial 2.4 mm small incision cataract surgery.
Reduction of the width of the corneal incision was one the main changes taking place in cataract surgery in recent years. The common use of foldable intraocular lenses (IOLs) and technological development of phaco machines allowed to reduce clear corneal incision below 3 mm. Term of Microincision Cataract Surgery (MICS) understood as cataract phacoemulsification performed with the incision width below 2 mm was defined by professor Alio in 2003. However, despite various modifications introduced in recent years, phacoemulsification still causes damage of the tissues that results in surgically induced astigmatism. Two MICS techniques have been developed: bimanual microincision cataract surgery (B-MICS) and coaxial microincision cataract surgery (C-MICS). In the bimanual technique cataract phacoemulsification can be performed through the main incision 1.4 mm wide due to the usage of sleeveless phaco tip (without irrigation) and irrigation chopper. The advantage of separation the irrigation from aspiration is improvement of liquid dynamics in the anterior chamber. Moreover, due to the usage of the irrigation chopper, in B-MICS it is possible to lower the mean ultrasound energy. In coaxial technique MICS phacoemulsification is performed through the incision 1.8 mm wide with usage of phaco tip with a silicon irrigation sleeve. The aim of the study is to compare functional results and complications of 3 methods of cataract phacoemulsification: bimanual 1.4 mm cataract surgery (B-MICS), coaxial 1.8 mm cataract surgery (C-MICS) and coaxial 2.4 mm small incision cataract surgery. Moreover, this study aimed to evaluate the impact of corneal width on best corrected visual acuity (uncorrected and corrected), surgically induced astigmatism, endothelial cell loss, intraocular pressure, anterior segment of the eye and central retinal thickness. ;
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